MicroTech II Applied Rooftop Unit Controller Protocol Information · application software and version 2.09 of the 6-compressor version of the Daikin MicroTech II Rooftop Unit Controller

Engineering Data ED 15060-13

Group: Controls

May 2012

Date: May 2012

Supersedes: ED 15060-12

© 2012 Daikin

MicroTech II®

Applied Rooftop Unit Controller

Protocol Information

BACnet® Networks

LONWORKS® Networks

RPS/RFS/RCS/RDT/ RPR/RPE/RDE

RoofPak Packaged Singlezone Heating and Cooling Rooftop Units

RDS/RAH/RAR RoofPak Outdoor Air Handling Units

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2 ED15060-13

Table of Contents

Table of Contents ........................................................................... 2Revision History ........................................................................................... 3

Software Revision ........................................................................................ 3Reference Documents ................................................................................... 4

Notice ........................................................................................................... 4

Limited Warranty ......................................................................................... 4Introduction .................................................................................... 5Unit Controller Data Points .......................................................................... 5

Protocol Definitions ..................................................................................... 5Basic Protocol Information ............................................................ 6Setting Unit Controller Communications Parameters ................................... 6

BACnet Networks ........................................................................................ 6MicroTech II Applied Rooftop Unit Controller Device Object .................... 8

Network Considerations ............................................................................... 9

LONWORKS Networks ................................................................................ 11Typical Application: Minimum Integration .................................. 15Set up the Unit for Network Control .......................................................... 15

Display Important Data Points.................................................................... 16Network Off ............................................................................................... 16

Network Occupancy Scheduling ................................................................ 16

Alarms ........................................................................................................ 17Unit Controller Sequence of Operation ...................................................... 17

Comprehensive Data Point Tables .............................................. 18BACnet Standard Objects ........................................................................... 18LONWORKS Variables ................................................................................ 22

Detailed Data Point Information .................................................. 25AHU ID ...................................................................................................... 25Airflow Status ............................................................................................ 25

Application Mode ....................................................................................... 25

Building Static Pressure ............................................................................. 27Building Static Pressure Dead Band ........................................................... 27

Building Static Pressure Setpoint ............................................................... 27

Bypass Hours ............................................................................................. 28Chilled Water Capacity .............................................................................. 28

Compressor 1 Operating Hours .................................................................. 28

Compressor 2 Operating Hours .................................................................. 28Compressor 3 Operating Hours .................................................................. 29




Compressor Outdoor Air Temperature Lockout ......................................... 30Control Temperature .................................................................................. 30

Control Temperature Source ...................................................................... 30

Cooling Capacity ........................................................................................ 31Cooling Control Status ............................................................................... 31

BACnet ...................................................................................................... 31

Cooling Operating Hours ........................................................................... 32Cooling Reset Enable State ........................................................................ 32

Cooling Reset Enable Value ....................................................................... 33

Daily Schedule ........................................................................................... 33Date ............................................................................................................ 35

Dehumidification Control ........................................................................... 35

Dehumidification: Maximum Cooling Stages ............................................ 35Dehumidification: Minimum Cooling Stages ............................................. 35

Dehumidification Operating Hours ............................................................ 36

Dehumidification Status ............................................................................. 36

Dew Point Dead Band ................................................................................ 37

Dew Point Setpoint ..................................................................................... 37

Dew Point Temperature .............................................................................. 37Discharge Air Cooling Dead Band ............................................................. 38

Discharge Air Cooling Setpoint .................................................................. 38

Discharge Air Heating Dead Band ............................................................. 39Discharge Air Heating Setpoint .................................................................. 39

Discharge Air Temperature ........................................................................ 39

Discharge Fan Capacity .............................................................................. 40Discharge Fan Status .................................................................................. 40

Duct Static Pressure.................................................................................... 41

Duct Static Pressure Dead Band ................................................................. 41Duct Static Pressure Setpoint ..................................................................... 41

Economizer Changeover Differential ......................................................... 42

Economizer Changeover Method ............................................................... 42Economizer Changeover Temperature Setpoint ......................................... 43

Economizer Enable .................................................................................... 43

Economizer Operating Hours ..................................................................... 43

Effective Cooling Discharge Setpoint ........................................................ 44Effective Cooling Enable Setpoint ............................................................. 44

Effective Discharge Air Temperature Setpoint ........................................... 45

Effective Heating Discharge Setpoint......................................................... 45Effective Heating Enable Setpoint.............................................................. 46

Effective Minimum Outdoor Damper Position Setpoint ............................. 46

Effective Setpoint Output ........................................................................... 46Emergency Override Mode Flag ................................................................ 47

Energy Recovery ........................................................................................ 48

Energy Recovery Exhaust Temperature ..................................................... 48Energy Recovery Hours ............................................................................. 48

Energy Recovery Supply Temperature ....................................................... 49

Entering Fan Temperature .......................................................................... 49Face and Bypass Control ............................................................................ 49

Face and Bypass Changeover Temperature Setpoint .................................. 50

Fan Operating Hours .................................................................................. 50Fan Operation Output ................................................................................. 50

Heating Capacity ........................................................................................ 50

Heating Control Status ............................................................................... 51Heating Operating Hours ............................................................................ 51

Heating Reset Enable State ........................................................................ 52

Heating Reset Enable Value ....................................................................... 52Holidays ..................................................................................................... 53

HVAC Unit Type Identifier ........................................................................ 54

In Alarm ..................................................................................................... 54Local Bypass Time ..................................................................................... 55

Maximum Discharge Air Cooling Setpoint ................................................ 55

Maximum Discharge Air Heating Setpoint ................................................ 55Maximum Purge Time................................................................................ 56

Minimum Discharge Air Cooling Setpoint ................................................. 56

Minimum Discharge Air Heating Setpoint ................................................. 56Minimum Discharge Air Temperature Control Flag................................... 57

Minimum Discharge Air Temperature Limit .............................................. 57

Minimum Outdoor Airflow Setpoint .......................................................... 57Minimum Send Time ................................................................................. 58

OA Ambient ............................................................................................... 58

Occupancy .................................................................................................. 59

Occupancy Mode ....................................................................................... 59

Occupancy Scheduler Input ........................................................................ 61Occupancy Source ...................................................................................... 62

Occupied Cooling Dead Band .................................................................... 62

Occupied Cooling Setpoint......................................................................... 62Occupied Heating Dead Band .................................................................... 63

Occupied Heating Setpoint ......................................................................... 63

Outdoor Air Damper Minimum Position .................................................... 64Outdoor Air Damper Position..................................................................... 64

Outdoor Air Flow ....................................................................................... 65

Outdoor Air Temperature ........................................................................... 65Receive Heartbeat ...................................................................................... 66

Relative Humidity ...................................................................................... 66

Relative Humidity Control Type ................................................................ 66Relative Humidity Dead Band .................................................................... 67

Relative Humidity Setpoint ........................................................................ 67

Remote Discharge Fan Capacity Control Flag ........................................... 67

Remote Discharge Fan Capacity Setpoint .................................................. 68

Remote Return Fan Capacity Control Flag ................................................. 68

Remote Return Fan Capacity Setpoint........................................................ 69Return Air Temperature ............................................................................. 69

Return Fan Capacity ................................................................................... 69

Return Fan Status ....................................................................................... 70Send Heartbeat ........................................................................................... 70

Space Setpoint Type ................................................................................... 71

Space Temperature ..................................................................................... 71Temperature Setpoint Input ........................................................................ 72

Time ........................................................................................................... 72

Unit Status .................................................................................................. 72Unoccupied Cooling Differential ............................................................... 75

Unoccupied Cooling Setpoint ..................................................................... 75

Unoccupied Heating Differential ................................................................ 76Unoccupied Heating Setpoint ..................................................................... 76

ED15060-12 3

VAV Box Output ....................................................................................... 77

Alarms ........................................................................................... 78Classes........................................................................................................ 78

Alarm Monitoring ...................................................................................... 79

Alarm Clearing ........................................................................................... 80

Objects ....................................................................................................... 80

Alarm, Faults: Individual Notification ........................................................ 81

Alarm, Problems: Individual Notification .................................................. 82Appendix A: Protocol Implementation Conformance Statement (PICS) ................................................... 84BACnet Protocol Implementation Conformance Statement ....................... 84

Product Description .................................................................................... 84

BACnet Standardized Device Profile ......................................................... 84Standard Object Types Supported .............................................................. 86

Data Link Layer Options ............................................................................ 87

Segmentation Capability ............................................................................ 87

Device Address Binding ............................................................................. 87

Character Sets Supported ........................................................................... 87

Appendix B: Early Versions of the BACnet Device Object ............................................................................................ 88Index ............................................................................................. 89

Revision History ED15060-0 July 10, 2001 Preliminary release. BACnet properties only.

ED15060-1 August 31, 2001 Preliminary release. Added LONWORKS variables, Alarm Notification, and Network Addressing.

ED15060-2 October 4, 2001 Added access via BACnet standard object types and Index.

ED15060-3 October 24, 2001 Clarified network addressing sections of each network type.

ED15060-4 November 30, 2001 Incorporated changes of application software revision 1.26, removed nonstandard objects that have

corresponding standard objects, and other minor corrections.

ED15060-5 January 29, 2002 Incorporated changes in applications software revision 1.29, reformatted and revised data points,

ED15060-6 September 18, 2002 Incorporated unique BACnet Device Object Instance property, 6-compressor units and other minor

format and text revisions.

ED15060-7 November 10, 2003 Incorporated changes of application software revision 1.44 and 2.07 for individual alarm notification.

ED15060-8 October 20, 2004 Revised LonMark alarm notification text. Added clarification to Alarm tables for Series 100 and Series

200 Application Software.

ED15060-9 March 29, 2006 Updated PICS statement. Changed nvoOAMinPos to nviOAMinPos. Added Compressor Outdoor Air

Temperature Lockout and Economizer Enable data points. Added note regarding writing BACnet

analog values, p.7 & p.21.

ED15060-10 November 15, 2006 Revised Cooling Reset Enable Value in Detailed Data Point section (LonWorks).

ED15060-11 April, 2008 Relocated Occ Schedule pont to Occupancy section in BACnet and LON data tables. Added Cooling

Reset Enable State, Cooling Reset Enable Value, Heating Reset Enable State and Heating Reset Enable

Value data points to BACnet table.

ED15060-12 September 2008 Removed 56400 bps baud rate option from Data Link Layer Options in PICS appendix and updated

software revision numbers in PICS and Software Revision section.

ED15112-13 May 2012 Clarified Appliation Mode description.

Software Revision Keypad Menu Path Setup/Service\Unit Configuration\AHU ID=

This edition documents Network Protocols for version 1.53 of the standard Daikin MicroTech II® Rooftop Unit Controller

application software and version 2.09 of the 6-compressor version of the Daikin MicroTech II Rooftop Unit Controller

applications and all subsequent versions until otherwise indicated. However, if your software is of a later version (for

example, 1.54 or 2.10), some of the information in this document may not completely describe your application.

You can determine the revision of the application software from the keypad/display. The path for this information from the

main menu is Setup\Service\Unit Configuration\AHU ID=.

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Reference Documents Company Number Title Source

Daikin IM 696 MicroTech II Applied Rooftop Unit Controller

Installation Manual

www.DaikinApplied.com

Daikin OM 137 MicroTech II Applied Rooftop Discharge Air

Controller Operation Manual


Daikin OM 138 MicroTech II Applied Rooftop Space Comfort

Controller Operation Manual


American Society of

Heating, Refrigerating and

Air-Conditioning

Engineers

ANSI/

ASHRAE

135-2001

BACnet® A Data Communication Protocol for

Building Automation and Control Networks

www.ashrae.org

LonMark Interoperability

Association

078-0014-01E LonMark® Layers 1-6 Interoperability Guidelines,

Version 3.0

www.lonmark.org


Association

078-0120-01E LonMark Application Layer Interoperability

Guidelines, Version 3.2

www.lonmark.org


Association

8500_10 LonMark Functional Profile: Space Comfort

Controller, Version 1.0

www.lonmark.org


Association

8600_10 LonMark Functional Profile: Discharge Air Controller,

Version

www.lonmark.org

Echelon Corporation 078-0156-01G LONWORKS FTT-10A Free Topology Transceiver

Users Guide

www.echelon.com

Notice © 2012 Daikin, Minneapolis MN. All rights reserved throughout the world

Daikin reserves the right to change any information contained herein without prior notice. The user is responsible for

determining whether this product is appropriate for his or her application.

The following are trademarks or registered trademarks of their respective companies: BACnet from American Society

of Heating, Refrigerating and Air-Conditioning Engineers, Inc. Echelon, LONWORKS, LONMARK, and LonTalk from

Echelon Corporation, Windows from Microsoft Corporation, and Daikin and MicroTech II from Daikin. LONMARK and the

LONMARK logo are managed, granted and used by LONMARK International under a license granted by Echelon Corporation.

Limited Warranty Consult your local Daikin sales representive or warranty details. Refer to Form 933-430285Y. To find your local Daikin

Representative, go to www.DaikinApplied.com.

http://www.daikinmcquay.com/

ED15060-12 5

Introduction

This document contains the necessary information you need to incorporate a MicroTech II Applied Rooftop Unit Controller

into your building automation system. It lists all BACnet® properties, LONWORKS® variables, and corresponding

MicroTech II Applied Rooftop Unit Controller data points. It also contains the BACnet Protocol Implementation

Conformance Statement (PICS). BACnet and LONWORKS terms are not defined. Refer to the respective specifications for

definitions and details.

Unit Controller Data Points The MicroTech II Applied Rooftop Unit Controller contains data points or unit variables that are accessible from three user

interfaces: the unit keypad, a BACnet network (BACnet/IP or MS/TP), or a LONWORKS network. Not all points are

accessible from each interface. This manual lists all important data points and the corresponding path for each applicable

interface. Refer to the applicable Operation Manual for keypad details. See Reference Documents section. This manual

contains the network details necessary to incorporate the unit controller into your network.

Protocol Definitions The MicroTech II Applied Rooftop Unit Controller can be configured in either an interoperable BACnet or LonWorks

network. The controller must have the corresponding network communications module installed. There are three network

communications modules: BACnet/IP, BACnet MS/TP (Master/Slave Token Passing), and LONWORKS. There are two

LonWorks modules: one in accordance with the LonMark Space Comfort Controller functional profile and one in

accordance with the Discharge Air Controller functional profile.

BACnet Protocol BACnet is a standard communication protocol for Building Automation and Control Networks developed by the American

National Standards Institute (ANSI) and American Society of Heating, Refrigeration and Air-conditioning Engineers

(ASHRAE) specified in ANSI/ASHRAE standard 135-2001. It addresses all aspects of the various systems that are applied

to building control systems. BACnet provides the communication infrastructure needed to integrate products manufactured

by different vendors and to integrate building services that are now independent.

LONWORKS Networks A control network specification for information exchange built upon the use of LonTalk for transmitting data developed by

the Echelon Corporation.

LonTalk Protocol A protocol developed and owned by the Echelon Corporation. It describes how information should be transmitted between

devices on a control network.

LonMark Certification LonMark certification is an official acknowledgement by the LonMark Interoperability Association that a product

communicates using the LonTalk protocol and transmits and receives data per a standard LonMark functional profile.

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Basic Protocol Information

Setting Unit Controller Communications Parameters There are 12 communication parameters involved in setting up the unit controller for proper communication with the

various communication module options (BACnet IP, BACnet MS/TP or LON). These parameters are set differently

depending on which communication module is ordered and shipped with the unit. The table below lists the four possible

sets of default parameter settings. Not all the parameters apply to all the module options. The entries in the table that are

shown in bold font apply to a particular module option. Changing these parameters requires the MicroTech II

ServiceTools for Rooftop and Self-Contained units.

Communication Setup Parameter Settings Parameter Name BACnet IP BACnet MS/TP LON (DAC or SCC) No Communication Module

IP Address 172.16.83.46 172.16.83.46 172.16.83.46 172.16.83.46

IP Subnet Mask 255.255.0.0 255.255.0.0 255.255.0.0 255.255.0.0

UDP Port

Number 47808 47808 47808 47808

IP Router Address

172.16.128.0 172.16.128.0 172.16.128.0 172.16.128.0

IP Network Address

1001 1001 1001 1001

MSTP Network Address

2001 2001 2001 2001

MSTP MAC Address

1 129 2 129 129

MSTP Baud Rate 19200 19200 19200 19200

Communication Option

5 None MSTP MSTP MSTP

Device Instance Number

2 XXXXXX XXXXXX XXXXXX XXXXXX

Max APDU Length

3 1024 501 501 501

Device Object Name

4

MTII RTUC XXXXXXXXX MTII RTUC XXXXXXXXX MTII RTUC XXXXXXXXX MTII RTUC XXXXXXXXX

Notes: 1. The MSTP MAC Address is not adjustable from the MicroTech II ServiceTools. It is set via the dipswitch block on the MS/TP communication

module.

2. The Device Instance Number is factory set equal to the last six significant digits of the 18 digit number on the bar-code label on the unit’s maincontrol board (MCB). For example if the last six digits are 043.066, then the Device Instance Number is set to 43066.

3. The Max APDU Length automatically changes based on the Communication Option parameter. It should be 1024 for BACnet IP and 501 for

BACnet MS/TP.4. The Device Object Name is factory set as indicated in the table where the Xs are replaced by the last nine digits of the 18 digit number on the bar-

code label on the unit’s main control board (MCB). For example if the last nine digits are 000.043.066, then the Device Object Name is set to MTII

RTUC 000043066 for an applied rooftop unit or MTII SCUC 000043066 for a vertical self-contained unit.

5. If the Communication Option is changed in the field, a Reset, Archive and Cold Reset (in that order) must be performed on the controller after all the

communication related parameters are set as required.

BACnet Networks Compatibility The MicroTech II Applied Rooftop Unit Controller conforms to the BACnet Standard (ANSI/ASHRAE 135-2001) as stated

in the Protocol Implementation and Conformance Statement (PICS). See BACnet Protocol Implementation Conformance

Statement on page 84.

BACnet Objects MicroTech II Applied Rooftop Unit Controllers incorporate standard BACnet object types (i.e., object types defined in the

BACnet Standard) and additional proprietary BACnet object types that conform to the BACnet Standard. Each object has

properties that control unit variables or data points. Some object types occur more than once in the MicroTech II Applied

Rooftop Unit Controller; each occurrence or instance has different properties and controls different unit variables or data

points. Each instance is designated with a unique instance index. Some properties can be adjusted (read/write properties,

e.g., setpoints) from the network and others can only be interrogated (read-only properties, e.g., status information).

ED15060-12 7

Each data point accessible from a BACnet network is described with a table that gives the Object Identifier, Property

Identifier, Full BACnet Reference or path, and the Name enumeration of the property.

Note: Analog values can be written to the MicroTech II unit controller via BACnet at a priority of 1 to 16, where 1 is the

highest priority and 16 is the lowest priority. All analog values written to the MicroTech II controller via BACnet

should be at a priority of 16. An analog value written via BACnet may be different from the corresponding value

actually used for control if it was written at a priority other than 16. This situation can happen when the value is

later changed via the keypad.

Example of BACnet Data Point

Keypad Menu Path Airflow\Airflow Summary\Disch Fan=

Object Identifier Property

Object Type Type ID Instance Name ID

Binary Output 4 255 Present_Value 85

Full Reference

MTII RTUC #########.Applications.McQ.RT.Start Stop Control.DF On Off.Present Value

Enumeration

0 = Off

1 = On

Object Identifier Object Identifiers are each designated with an Object type as defined in the BACnet specification. The first column of the

data point definition gives the object type. This object happens to be Discharge Fan Status (See page 40.)

The object identifier is a property of the object that you can read from the object. The name of the property is

“Object_Identifier” and the property identifier is 75.

Each object in a rooftop controller has a unique identifier. BACnet object identifiers are two-part numbers of BACnet

Object Identifier data type. The first part identifies the object type (the first 10 bits of the 32-bit BACnet Object Identifier

[See ANSI/ASHRAE 135-2001 BACnet A Data Communication Protocol for Building Automation and Control

Networks]). The first column of the data point definition gives the object type. The second part identifies the instances of

that particular object type (the last 22 bits of the 32-bit BACnet Object Identifier).

The object identifier is shown in the data points listing as two numbers. The first number is shown in the Type ID column

and designates the Object type enumeration. The second number is shown in the Instance column and designates the

instance of that particular object type.

The object identifier is a property of the object that you can read from the object code. The name of the property is

“Object_Identifier” and the property identifier is 75. The ASHRAE BACnet specification reserves the first 128 numbers for

ASHRAE defined objects. Manufacturers may define additional object types and assign a number above 127 as long as they

conform to the requirements of the ASHRAE BACnet specification.

Each object also has a name. Object names are character strings. The object name is a property of the object that you can

read from the object. The name of the property is “Object_Name” and the property identifier is 77.

Objects are sometimes referred to as an object type and instance number as they are in the BACnet specification. The

example object above would be: Binary Output, Instance 325.

Property Identifier Each object has a number of properties or attributes. Each property has a unique identifier of BACnet Property Identifier

data type. Property identifiers are an enumerated set; a number identifies each member. The Property Identifier enumeration

number is shown in the Property ID column. In the example above the property identifier is 85.

Property Name Each property also has a unique name. Property names are character strings and shown in the Property Name column. In the

example above the property name is Present Value.

! CAUTION

Do not change the character string of object and property names because the MicroTech II service tools use the name to identify the object.

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Full Reference The full reference is the path of the property within the network where the MicroTech II Applied Rooftop Unit Controller

resides. It is a character string equivalent to the object identifier and the property identifier. In the example above the full

reference is MTII RTUC #########. Applications.McQ.RT.Start Stop Control.DF On Off.Present Value.

Enumerated Values Some properties are standard data types and some are enumerated sets. If the property value is an enumerated set, all

enumerated values and corresponding meaning are given in the Enumeration column of the data point listing.

MicroTech II Applied Rooftop Unit Controller Device Object Each BACnet compatible device must have one and only one BACnet Device Object.

Device Object Identifier The MicroTech II Applied Rooftop Unit Controller Device Object Identifier uniquely specifies the unit within the network.

The device object type for all devices is fixed by ASHRAE at 8. Therefore the device object instance number must be

unique. The initial Device Object identifier is set at manufacturing. The device object identifier can be read from the unit

controller. The name of the property is “Object_Identifier” and the property identifier is 75.

The initial device object instance number is derived from the unit controller serial number. The serial number is also the

Ethernet MAC address of the controller. An Ethernet MAC address is a unique 18-bit number separated into 6 groups of 8

bits (an 8-bit group is also known as an octet) and declared as a series of independent decimal values with periods (.)

between decimal values (for example: 000.016.141.000.041.229). Each decimal value represents one octet and ranges from

0 to 255.

The serial number is printed on a label fixed to the unit controller Main Control Board in both decimal value form and as a

bar code of the decimal values.

The device object instance number is initially assigned as series of six decimal digits equal to the last six digits (two octets)

of the serial number (for example for the serial number given above: 041229).

! CAUTION

If another device in the network already has this object identifier (instance number), you must change the instance number of one device object, so that all devices in the network have a unique device identifier.

Device Object Name The Device Object Name uniquely specifies a device in the network. It must be unique in the network. The device name for

the MicroTech II Applied Rooftop Unit Controller device is MTII RTUC #########. The ######### is a unique nine digit

number. It is the last nine digits of the board serial number assigned during the manufacturing process. (The serial number is

also the Ethernet MAC address of the controller.) The device name is the “prefix” of all object names in the MicroTech II

Applied Rooftop Unit Controller. All objects include the device name and a period “.” (MTII RTUC #########.) preceding

the object name.

The serial number is printed on a label fixed to the unit controller Main Control Board in both decimal value form and as a

bar code of the decimal values.

The Device Object name is also available to the network in the device. The property name is “Object_Name” and property

identifier is 77.

The Device Object Name is changeable with AAHU ServiceTool software. However, please note that an archive must be

performed following a Device Object Name change. Failure to do so can lead to controller problems requiring that the

entire application be re-downloaded.

ED15060-12 9

Device Object Properties The device object contains many other informative properties as shown in Table 1.

Table 1. MicroTech II Applied Rooftop Device Object Properties Property Identifier Value Data Type

Object Identifier 75 Instance number assigned at manufacturing,

based on the board serial number

BACnet Object Identifier

Object Name 77 MTII RTUC #########1 Character String

Object Type 79 8 BACnet Object Type

Vendor Name 121 Daikin Character String

Vendor Identifier 120 3 Unsigned 16

Model Name 70 mdcu_ Character String

Firmware Version 44 variable Character String

Application Software Revision 12 variable Character String

Description 28 Used by MDCU Active X Control Only Character String

Local Time 57 variable Time

Local Date 56 variable Date

IP Address 1135 variable Array

IP Mask 1136 variable Array

IP Router Address 1137 variable Array

Communications Option 2159 Enumerated None, MSTP

Network Address 875 1001 Unsigned 16

MS/TP Baud Rate 2173 Enumerated 9600, 19200, and 38400

MS/TP Network Address 2161 variable Integer

Max APDU Length Accepted 62 variable Unsigned 16

Network Considerations Access to Properties Object properties are accessible from the network by specifying the device object identifier, object identifier, and the

property identifier. To access a property, you must specify the object identifier including the device object identifier or the

object name including the device object name and the property identifier.

BACnet/IP Addressing The BACnet/Internet Protocol (BACnet/IP) address of the MicroTech II Applied Rooftop Unit Controller in a BACnet/IP

network consists of the four-octet Internet Protocol address followed by the two-octet UDP (User Datagram Protocol) port

number. The BACnet/IP address is a six-octet value analogous to a MAC address. The IP address portion of the BACnet/IP

address must be unique in the BACnet/IP network segment. The default UDP port number in the MicroTech II Applied

Rooftop Unit Controller is 47808 (BAC0 in hexadecimal).

The device object of the MicroTech II Applied Rooftop Unit Controller contains an Internet Protocol Subnet Mask (Default

is 255.255.0.0) and a default IP address of 172.16.83.46. The controller does not support DHCP (Dynamic Host

Configuration Protocol) IP addressing.

The MicroTech II Applied Rooftop Unit Controller can be incorporated into an BACnet/IP network dedicated to BACnet

devices only or an Ethernet network shared with BACnet devices and other devices.

1 Early versions of the MicroTech II Applied Rooftop Unit Controller used mdcu_######### as the device object name. See Appendix A for details.

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10 ED15060-13

Shared Ethernet Networks Integrating the MicroTech II Applied Rooftop Unit Controller into a shared Ethernet LAN requires close cooperation with

the network administrator of the shared Ethernet network. First, obtain the IP Subnet Mask of the shared network from the

network administrator. Then, obtain static IP Addresses for all MicroTech II Unit Controllers you are integrating into the

shared network. Finally obtain the address of an IP Router to use for sending IP messages to and from the BACnet IP

subnets. Once you have these, refer to Setting Unit Controller Communication Parameters in the Basic Protocol Information

section found previously in this document.

The default BACnet/IP Network Address in the MicroTech II Unit Controller is 1001. The Network Address must be

unique for each BACnet network segment. All BACnet/IP devices on each individual BACnet/IP segment must have the

same BACnet/IP Network Address. This is the Network Address property of the device object of the MicroTech II Applied

Rooftop Unit Controller.

Finally, the Communication Option property of the MicroTech II Applied Rooftop Unit Controller device object must be set

to NONE for BACnet/IP communications to take place. MSTP is the default value for this property. Refer to Setting Unit

Controller Communication Parameters in the Basic Protocol Information section found previously in this document.

Configuring the Unit Controller The MicroTech II Main Control Board is designed, programmed, and configured at the factory to be a MicroTech II

Applied Rooftop Unit Controller. The unit is ready to operate with the default values of the various parameters set at the

factory. Default values may be changed with the unit’s keypad or via the network. See the appropriate operation manual for

default values and keypad operating instructions. See Reference Documents section.

BACnet MS/TP Network Addressing The BACnet MS/TP device address (Media Access Control [MAC] address) of the MicroTech II controller in a BACnet

Master Slave/Token Passing (MS/TP) Local Area Network (LAN) is set in an eight-position DIP switch on the BACnet

MS/TP Communications Module. The MAC address is physically set in eight binary switches. Bit 0 of the address

corresponds to switch position 1 and bit 7 of the address corresponds to switch position 8. All MicroTech II controllers must

be master controllers; therefore, bit 7 is always equal to 0 (open). An open switch (switch handle up) is a 0, and a closed

switch (switch down) is a 1. This address must be unique and is determined during installation. After you set handle the

address in the switches, you must cycle power (turn the controller off and then on again) to the controller in order for the

new address to take effect.

The receive LED flickers when the module is receiving data from the network, and the transmit LED flickers when the

module is sending data to the network. The default data transmission rate is set to 19,200 bps (baud). This rate can be

changed to 9600 or 38,400 with the ServiceTool software. Please refer to Setting Unit Controller Communications

Parameters in the Basic Protocol Information section found previously in this document.

The default BACnet MS/TP network address of the MicroTech II Applied Rooftop Unit Controller is 2001. This must be

set the same as all other BACnet devices on the network for devices to communicate with each other. To change this

address, refer to Setting Unit Controller Communications Parameters.

For BACnet MS/TP communications, the Communication Option property of the MicroTech II controller must be set to

MS/TP. Please refer to Setting Unit Controller Communications Parameters in the Basic Protocol Information section found

previously in this document.

ED15060-12 11

LONWORKS Networks LONWORKS technology, developed by Echelon Corporation, is the basis for LonMark interoperable systems. This

technology is independent of the communications media. The LonMark Interoperable Association has developed standards

for interoperable LONWORKS technology systems. In particular they have published standards for HVAC equipment

including the Discharge Air Controller functional profile and the Space Comfort Controller functional profile. These

profiles specify a number of mandatory and optional standard network variables and standard configuration parameters.

This manual defines these variables and parameters available in the MicroTech II Applied Rooftop Unit Controller.

Compatibility The MicroTech II Applied Rooftop Unit Controllers with the LONWORKS communications modules operate in accordance

with the Discharge Air Controller (DAC) functional profile and the Space Comfort Controller (SCC) functional profile of

the LonMark Interoperability standard.

LONWORKS Variables MicroTech II Applied Rooftop Unit Controllers incorporate LONWORKS network variables to access unit data points. The

controller uses LONWORKS Standard Network Variable Types (SNVT) from each profile. Some data points can be adjusted

(input network variables, nvi) (read/write attributes, e.g., setpoints) from the network and others can only be interrogated

(output network variables, nvo) (read only attributes, e.g., status information). Configuration variables (nci) are included

with the read/write attributes.

Each data point accessible from a LONWORKS network is described with a table that gives the LONWORKS Name, Profile,

SNVT Type, and SNVT Index. If the variable is a configuration variable the table also includes the SCPT Reference and the

SCPT Index.

Example of LONWORKS Data Point LonWorks

LonWorks Name Profile SNVT Type SNVT Index

nvoBldgStatPress DAC, SCC SNVT_press_p 113

LONWORKS Name

Each network variable has a name that you use to access the data point. This is the name of the variable from the profile. In

the example above the name network variable is nvoBldgStatPress.

Profile

The profile column designates the MicroTech II Communications Module that incorporates this network variable. The

variable itself may not be a standard component of that particular profile, but the communications module does implement

and it is available to the network.

SNVT Type This column gives the name of the standard network variable type from the master list.

SNVT Index This column gives the number of the standard network variable type from the master list.

SCPT Reference This column gives the name of the Standard Configuration Parameter Type (SCPT) from the master list.

SCPT Index This column gives the number of the Standard Configuration Parameter Type (SCPT) from the master list.

Network Considerations

Network Topology

Each MicroTech II LONWORKS Communications Module is equipped with an FTT-10A transceiver for network

communications. This transceiver allows for (1) free topology network wiring schemes using twisted pair (unshielded) cable

and (2) polarity insensitive connections at each node. These features greatly simplify installation and reduce network

commissioning problems. Additional nodes may be added with little regard to existing cable routing.

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12 ED15060-13

Free Topology Networks

A LONWORKS “free topology network“ means that devices (nodes) can be connected to the network in a variety of

geometric configurations. For example, devices can be daisy-chained from one device to the next, connected with stub

cables branching off from a main cable, connected using a tree or star topology, or any of these configurations can be mixed

on the same network as shown in Figure 1. Free topology segments require termination for proper transmission

performance. Only one termination is required. It may be placed anywhere along the segment. Refer to Echelon

LONWORKS FTT-10A Transceiver User’s Guide. See Reference Documents section.

Free topology networks may take on the following topologies:

Bus

Ring

Star

Mixed - Any combination of Bus, Ring, and Star

Note: Limitations to wire lengths apply and must be observed.

Figure 1. Singly Terminated Free Topology

Termination

Star Topology

Termination

Ring Topology

Termination

Singly Terminated Bus Topology

Stub

}

Termination

Mixed Topology

A network segment is any part of the free topology network in which each conductor is electrically continuous. Each of the

four diagrams is a illustration of a network segment. Some applications may require two or more segments; see “Free

Topology Restrictions.” If necessary, segments can be joined with FTT-10A-to-FTT-10A physical layer repeaters. See

Figure 2. Refer to Echelon LonWorks FTT-10A Transceiver User’s Guide.

Figure 2. Combining Network Segments with a Repeater

Termination Termination

FT

T-1

0A

FT

T-1

0A

ED15060-12 13

Free Topology Restrictions

Although free topology wiring is very flexible, there are restrictions. A summary follows, refer to the Echelon FTT-10A

User’s Guide for details.

1. The maximum number of nodes per segment is 64.

2. The maximum total bus length depends on the wire size:

Wire Size Maximum Node-to-Node Length Maximum Cable Length

24 AWG 820 ft (250 m) 1476 ft (450 m)

22 AWG 1312 ft (400 m) 1640 ft (500 m)

16 AWG 1640 ft (500 m) 1640 ft (500 m)

The longest cable path between any possible pair of nodes on a segment must not exceed the maximum node-to-node

distance. If two or more paths exist between a pair of nodes (e.g., a loop topology), the longest path should be

considered. Note that in a bus topology, the longest node-to-node distance is equal to the total cable length.

a. The total length of all cable in a segment must not exceed the maximum total cable length.

3. One termination is required in each segment. It may be located anywhere along the segment.

Doubly Terminated Networks

You can extend the maximum total cable length without using a repeater by using doubly-terminated network topology. See

Figure 3. The trade-offs are (1) this network topology must be rigorously followed during the installation and subsequent

retrofits and (2) two terminations must be installed at the ends of the bus for proper transmission performance. Refer to

Echelon LONWORKS FTT-10A Transceiver User’s Guide.

Note: Limitations to wire lengths apply and must be observed.

Figure 3. Doubly Terminated Network Topology

Termination Termination

Doubly Terminated Topology Restrictions

The restrictions on doubly-terminated bus topology are as follows:

1. The maximum number of nodes per segment is 64.

2. The maximum total bus length depends on the wire size:

Wire Size Maximum Cable Length

24 AWG 2952 ft (900 m)

22 AWG 4590 ft (1400 m)

16 AWG 8855 ft (2700 m)

3. The maximum stub length is 9.8 ft (3 m). The length of the MicroTech II Applied Rooftop LONWORKS cable harness

stub is 7.2 ft (2.19 m).

A stub is a piece of cable that is wired between the node and the bus. See Figure 1. Note that if the bus is wired directly

to the node, there is no stub, and thus the stub length is zero. If you are wiring to a field terminal strip on a unit, be sure

to account for any factory wiring between the terminal strip and the controller. This wiring is considered part of the

stub.

4. Two terminations are required in each segment. One must be located at each end of the bus.

Network Cable Termination

LONWORKS network segments require termination for proper data transmission performance. The type and number of

terminations depend on network topology. Refer to Echelon LONWORKS FTT-10A Transceiver User’s Guide.

LonWorks Network Addressing

Every Neuron Chip has a unique 48-bit Neuron ID or physical address. This address is generally used only at initial

installation or for diagnostic purposes. For normal network operation, a device address is used.

14

14 ED15060-13

Device addresses are defined at the time of network configuration. All device addresses have three parts. The first part is the

Domain ID, designating the domain. Devices must be in the same domain in order to communicate with each other. The

second part is the Subnet ID that specifies a collection of up to 127 devices that are on a single channel or a set of channels

connected by repeaters. There may be up to 255 subnets in a domain. The third part is the Node ID that identifies an

individual device within the subnet.

A group is a logical collection of devices within a domain. Groups are assembled with regard for their physical location in

the domain. There may be up to 256 groups in domain. A group address is the address that identifies all devices of the

group. There may be any number of devices in a group when unacknowledged messaging is used. Groups are limited to 64

devices if acknowledged messaging is used.

A broadcast address identifies all devices within a subnet or domain.

LONWORKS network variables for both the Discharge Air Controller and the Space Comfort Controller are defined below.

Variables are used in both the Space Comfort Controller and Discharge Air Controller profiles unless marked otherwise.

Commissioning the Network

Pressing the service pin, switch on the MicroTech II LONWORKS Communications Module, generates a service pin

message, which contains the Neuron ID and the program code identification of the node. A service pin message is a network

message that is generated by a node and broadcast on the network. It can be used to commission the LONWORKS network.

A network configuration tool maps device Neuron IDs to the domain/subnet/node logical addressing scheme when it creates

the network image, the logical network addresses and connection information for all devices (nodes) on the network.

External Interface File (XIF) LonMark guidelines specify exact documentation rules so that proprietary configuration tools are not required to

commission and configure LONWORKS devices. The MicroTech II LONWORKS Applied Rooftop Communications Module

is self-documenting so that any network management tool can obtain all the information needed over the network to connect

it into the system and to configure and manage it. An External Interface File (a specially formatted PC text file with an

extension .XIF) is also available so that any network tool can design and configure it prior to installation. For a copy of the

XIF file contact your local Daikin representative.

Configuring the Unit Controller The MicroTech II Applied Rooftop Controller Main Control Board is designed, programmed, and configured at the factory

to be a rooftop unit controller in accordance with either the LonMark Discharge Air Controller (DAC) or LonMark Space

Comfort Controller (SCC) functional profile. The unit is ready to operate with the default values of the various parameters

set at the factory. Default values may be changed with the unit’s keypad or via the network. See the appropriate operation

manual for default values and keypad operating instructions.

Note: The Communications Option property in the device object must be set to MSTP for communications on a

LONWORKS network. Please refer to Setting Unit Controller Communications Parameters in the Basic Protocol

Information section found previously in this document.

Data Integrity The integrity of some data depends on a valid network connection to maintain current values. The following data points

require a valid network connection if bound. If data points listed in Table 2 do not change after a given time, the controller

reverts to the default values of the variable.

Table 2. Receive Heart Beat Variables Data Point LonWorks Variable

Occupancy Scheduler Input nviOccSchedule

Application Mode nviApplicMode

Remote Discharge Fan Capacity Setpoint nviSupFanCap

Building Static Pressure nviBldgStatPress

Outdoor Air Temperature nviOutdoorTemp

Return Air Temperature nviRATemp

Space Temperature nviSpaceTemp

Relative Humidity nviSpaceRH

ED15060-12 15

Typical Application: Minimum Integration

When you have integrated the unit into your network, you can monitor and control unit operation from your workstation. At

a minimum, you can:

Display and monitor a minimum of important data points on your workstation display

Turn the unit on or off from your workstation

Set the schedule from your workstation and

Operate the unit safely

This section gives you the basic information and outlines a procedure to set up the unit for network control.

Set up the Unit for Network Control To control the MicroTech II controller over the network, follow the setup steps below.

1. Set the S7 rocker switch on the control panel to AUTO. Figure 4 shows the general location of a typical installation.

Some models use variations of this switch panel, but all are in the same general location.

Figure 4. Location of Switch S7

Rocker Sw itch S7

2. On the unit keypad, set the Control Mode function to AUTO. The keypad password (4545) is required to edit this

function. For a detailed description of how to use the keypad refer to the appropriate Operation Manual. The keypad

can be very useful to verify network operation.

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16 ED15060-13

Display Important Data Points Typical workstation displays of MicroTech II unit controller attributes include the following significant data points (page

number of detailed description in parenthesis). Each data point is identified with a number that also identifies it in the

Comprehensive Data Point Tables. These data points are also shaded in the comprehensive tables so that you can distinguish

them from the rest of the data points in the table. References in the text of this section also identify these data points with a

number and shading.

Table 3. Significant Data Points

No Configuration No Temperatures/Pressures No Setpoints No Clear Alarms

1 Unit Status (72) 5 Discharge Air Temperature

(39)

9 Duct Static Pressure

Setpoint (41)

14 Alarm, Faults: Clear All (80)

2 Application

Mode (25)

6 Return Air Temperature

(69)

10 Unoccupied Cooling

Setpoint (75)

15 Alarm, Problems: Clear All

(81)

3 Occupancy (59) 7 Outdoor Air Temperature

(65)

11 Occupied Cooling Setpoint

(62)

16 Alarm, Warnings: Clear All

(83)

4 Occupancy

Mode (59)

8 Duct Static Pressure (41) 12 Occupied Heating Setpoint

(63)

13 Unoccupied Heating

Setpoint (76)

You can display any number of additional data points based on job requirements or individual preference. See LonWorks

Variables on page 22 for lists of all LONWORKS Variables available to a LONWORKS network. See BACnet Standard

Objects on page 18 for a list of all Standard BACnet Objects available to a BACnet network. For a more detailed description

of all available data points, see the Detailed Data Point Information section on page 25 of this document.

Network Off The unit can be turned off over the network by writing to the (2) Application Mode (See page 25). Writing AUTO to

Application Mode allows the unit controller to determine its mode of operation based on input conditions. Writing OFF to

Application Mode shuts down the unit, etc.

The Emergency Override Mode Flag (See page 47) can also be used to shut down the unit from the network.

Network Occupancy Scheduling Using the keypad, set the Occupancy Mode to Auto. Schedule unit operation over the network with the Occ Scheduler input.

Switching from OCC, UNOCC, BYPASS, or AUTO commands the unit into the mode you select.

Note: MicroTech II unit controllers use an internal keypad schedule during stand-alone operation. In BACnet the keypad

schedule writes to the commandable Present Value property of the Occupancy Scheduler Input object at priority

15. To command the schedule from the supervisory controller you must write to this property at a higher priority,

for example, priority 8. If network scheduling is abandoned later and you want to schedule from the keypad again,

you must relinquish command from the supervisory controller (that is, write NULL to the commandable Present

Value property of the Occupancy Scheduler Input object at the same priority as you were commanding the

schedule).

ED15060-12 17

Alarms Alarms in a MicroTech II controller are divided into three classes: Faults, Problems, and Warnings.

Fault Alarms have the highest priority.

Problem Alarms have medium priority.

Warning Alarms have the lowest priority.

Notification

BACnet

MicroTech II unit controllers with application software version 1.44 or 2.07 may have their alarms monitored by one of two

methods: 1) individually by three BACnet Analog Values, or 2) by alarm class using three BACnet Binary Values.

1. To monitor alarms individually, read the desired instance based on the three BACnet Analog Value objects for Fault

alarms, Problem Alarms, and Warning Alarms. The value of each of these objects (as described in the Alarms section

tables) will be the largest number in its enumeration that corresponds to an active alarm. Each of these objects will be

set to zero if no alarms are active in that group. These objects are explained in further detail in 1) Alarm, Faults: Clear

Individual, 2 Alarm, Problems: Clear Individual or 3) Alarm, Warnings: Clear Individual: valid alarm values of 4

through 252 (Alarm), 0 (Normal).

2. To monitor alarms by alarm class, read the Present_Value property of any one of three Binary Value objects; 1) Alarm,

Faults: Clear All, 2) Alarm, Problems: Clear All or 3) Alarm, Warnings: Clear All. If the Present_Value property of

these objects reads ACTIVE, an alarm in that class has occurred.

LonMark

Alarms within MicroTech II unit controllers can be monitored individually by using the In Alarm attribute of the Unit Status

Network Variable Output (i.e. nvoUnitStatus_in_alarm). This attribute displays a value that corresponds to the highest

priority alarm that is active. It is possible to have multiple active alarms, but only the highest priority is displayed in this

attribute. For example, if there is a simultaneous Dirty Filter Warning (value of 24) and a Freeze Fault (value of 252), then

the Freeze Fault value of 252 will display in nvoUnitStatus_in_alarm because it is the higher priority alarm of the two.

Once the Freeze Fault condition is corrected and the fault is cleared, the next priority active alarm value (in this example,

value of 24 for Dirty Filter alarm) is displayed. The values for all alarms are described in the Alarms section tables. If the

attribute nvoUnitStatus_in_alarm displays a zero, there are no active alarms.

Alarms may also be monitored by alarm class if desired. When the nvoUnitStatus_in_alarm attribute reads a value in the

range of 1 to 99, a Warning Alarm is active. When the attribute reads a value in the range of 100 to 199, a Problem Alarm

is active. When the attribute reads a value in the range of 200 to 255, a Fault Alarm is active.

Clearing

BACnet

MicroTech II unit controllers with application software version 1.29 and later have three Binary Value objects that can be

used to clear alarms; (14) Alarm, Faults: Clear All (See page 80), (15) Alarm, Problems: Clear All (See page 81) and (16)

Alarm, Warnings: Clear All (See page 83). Alarms in a particular class may be cleared by writing INACTIVE to the Present

Value property of the associated Binary Value object that reads ACTIVE. If the unit is still in the alarm condition after

clearing, the Present Value property of the associated Binary Value object changes to read ACTIVE again to indicate the

alarm still exists.

LonMark

MicroTech II unit controllers with application software version 1.34 and later have three Network Variable Inputs (nvi’s) of

type SNVT_Switch that can be used to clear alarms; 1) nviAlarmFault, 2) nviAlarmProblem and 3) nviAlarmWarning.

Alarms in a particular class may be cleared by changing the state part of the SNVT from 1 (Alarm) to 0 (Normal). If the unit

is still in the alarm condition after clearing, the In Alarm attribute of the Unit Status Network Variable Output

(nvoUnitStatus) changes to read 1 (Warning Alarm), 100 (Problem Alarm) or 200 (Fault Alarm) again to indicate the alarm

still exists.

Unit Controller Sequence of Operation The sequence of operation for a MicroTech II unit controller depends on the control type. Refer to the appropriate

MicroTech II Operation Manual for sequence of operation details. See www.DaikinApplied.com for unit controller OM.

These manuals also describe keypad operation.

http://www.daikinmcquay.com/

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18 ED15060-13

Comprehensive Data Point Tables

These comprehensive data point tables contain the significant parameters of specific data points. The shaded data points

with numbers are the data points listed in Table 3.

BACnet Standard Objects Network Control Property

(Keypad attributes available as BACnet Standard Objects for network control of the unit)

Page

Read Or

Read/Write

Object Type

Instance SCC DAC Description

System Summary

*(1) Unit Status 72 R AV 3810 0=OffUnoc, 1=OffNet, 2=Off Sw, 3=OffAlm, 4=Calib,

5=Startup, 6=Recirc, 7=FanOnly, 8=Econo, 9=Cooling,

10=MWU, 11=Heating, 12=MinDAT, 13=UnocEcon,

14=UnocFanO, 15=UnocDAT, 16=UnocClg, 17=UnocHtg, 18=Balance, 19=OffMan, 20=ManCtrl

Cooling Capacity 31 R AV 3620 Feedback of cooling capacity (%)

Heating Capacity 50 R AV 3695 Feedback of heating capacity (%)

Cooling Control Status 31 R AV 3665 0=All Clg, 1=Econo, 2= Mech Clg, 3=Off Amb, 4=Off Alarm,

5=Off None, 6=Off Bal, 7=Off Sw, 8=Off Net, 9=Off Man

Heating Control Status 51 R AV 3715 0=HtEna, 1=OffAmb, 2=OffAlarm, 3=OffNone, 4=N/A,

5=OffSw, 6=OffNet,7=OffMan

*(2) Application Mode 25 R/W AV 3605 0=Auto, 1=Off, 2=HeatOnly, 3=CoolOnly, 4=FanOnly

VAV Box Output 77 R BO 265 N/A Indicates the state of VAV box output (MCB-BO # 12) 0=Off,

1=On

Occupancy

*(3) Occupancy 59 R AV 3815 0=Occ, 1=Unocc, 2=Bypass

*(4) Occupancy Mode 59 R/W AV 3825 0=Occ, 1=Unocc, 2=Bypass, 3=Auto. Note: This is an

override object and not intended to be used to command

Occupancy. For typical operation, this should be set to

Auto.

Occupancy Scheduler Input 61 R/W BV 1455 Note: This BV is used to command Occupied &

Unoccupied operation when Occupancy Mode is set to

Auto. The BAS must write to this object at a priority less

than 15.

Occupancy Source 62 R AV 3820 0=None, 1=Int Sched, 2=Net Sched, 3=Occ Mode, 4=Remote

Sw, 5=N/A

Emergency Override Mode Flag 47 R/W AV 3610 0=Norm, 1=Off (Shuts unit off via a network signal, puts Unit

Status = OffNet)

Temperature

Control Temperature 29 R AV 135 Current temp of the input that the unit has been configured to

use as the control temp

*(5) Discharge Air Temperature 39 R AI 115 Current reading of sensor

*(6) Return Air Temperature 69 R AI 120 Current reading of sensor

Space Temperature 71 R** AI 100 Current reading of sensor

*(7) Outdoor Air Temperature 65 R** AI 125 Current reading of sensor

Entering Fan Temperature 49 R AI 130 Current reading of sensor

Airflow Summary

Airflow Status 25 R BI 160 0=Noflo, 1=Flow (Differential pressure switch sensing

discharge airflow)

Discharge Fan Status 40 R BO 255 0=Off, 1=On (Indicates if controller is commanding the

discharge fan on)

Return Fan Status 70 R BO 260 0=Off, 1=On (Controller’s command to the return or exhaust

fan)

Fan Operation Output 50 R BO 250 0=Off, 1=On (Relay output which indicates that fans are ON

(MCB BO # 3))

Duct Pressure

*(9) Duct Static Pressure 41 R AV 3790 N/A Current reading of sensor. If unit has two sensors the lower of

the two is displayed

Duct Static Pressure Setpoint 41 R/W AV 3730 N/A Default = 1.00” WC

ED15060-12 19

Network Control Property


Page

Read Or

Read/Write

Object Type


Discharge Fan Capacity 40 R AV 3735 N/A Current discharge fan capacity (%)

Building Pressure

Building Static Pressure 27 R** AI 1505 Current reading of sensor value or network input

Building Static Pressure Setpoint 27 R/W AV 3755 Default = 0.050” WC

Return Fan Capacity 69 R AV 3745 Current return or exhaust fan capacity (%)

Zone Cooling

Effective Cooling Enable

Setpoint 44 R AV 3640 If Control Temp > (this setpoint + ½ Cool Enable Dead Band),

Then cooling is enabled

Cooling Operating Hours 32 R Runtime

Total.

1515 Indicates hours of unit mechanical cooling.

Cooling Reset Enable State 32 R/W Applic. 790

N/A

Enables or disables discharge air temperature cooling reset

control for DAC. Note: When this object is enabled, the

type of cooling discharge temp reset is determined by the

object.

Cooling Reset Enable Value 33 R/W Applic. 790 N/A

Indicates the type of discharge air temperature cooling reset

control enabled. Note: Cooling Reset Enable State must be

enabled or this property has no effect.

*(11) Occupied Cooling

Setpoint 62 R/W AV 3655 Default = 75°F

Control Temperature Source 30 R/W AV 3600 0=Return, 1=Space, 2=OAT

*(10) Unoccupied Cooling


Zone Heating

Effective Heating Enable

Setpoint 45 R AV 3690 If Control Temp < (this setpoint – ½ Heat Enable Dead Band),

Then heating is enabled

*(12) Occupied Heating Setpoint 63 R/W AV 3710 Default = 70°F

*(13) Unoccupied Heating


Heating Reset Enable State 52 R/W Applic. 615 N/A Enables or disables the discharge air temperature heating reset

control for the Discharge Air Controller. Note: when this

property is enabled, the type of heating discharge

temperature reset is determined by the Heating Reset

Enable Value.

Heating Reset Enable Value 52 R/W Applic. 615 N/A Enables or disables the discharge air temperature heating reset

control for the Discharge Air Controller. Note: Heating

Reset Enable State must be enabled or this property has

no effect.

Discharge Cooling

Effective Cooling Discharge

Setpoint 44 R AV 3635 Current Discharge air setpoint which the unit will use in the

cooling mode

Discharge Air Cooling Setpoint 38 R/W AV 3630 N/A Default = 55°F

Min Discharge Air Cooling


Max Discharge Air Cooling


OA Damper

Outdoor Air Damper Position 64 R AI 460 Feedback value (%)

Effective Min Outdoor Damper

Pos Spt 46 R AV 3765 Current OA damper min position setpoint (%)

Outdoor Air Flow 65 R AV 3780 Current outdoor air flow on units with optional DesignFlow

(CFM)

Outdoor Air Damper Min

Position 64 R/W AV 3775 Default = 10%

Min Outdoor Airflow/Damper

Position 57 R/W AV 3770 Sets the Effective Min Outdoor Damper Position Stp when

Design Flow is set to YES

Economizer Changeover Method 42 R/W AV 3785 0=Enthalpy, 1=Dry Bulb

Economizer Changeover Temp

Spt 43 R/W AV 3760 Default=60°F, Makes changeover decision if Economizer

Changeover Method=Dry Bulb

20

20 ED15060-13



Page

Read Or

Read/Write

Object Type


Discharge Heating

Effective Heating Discharge

Setpoint 45 R AV 3685 Current discharge air setpoint which the unit uses in the

heating mode

Discharge Air Heating Setpoint 39 R/W AV 3680 N/A Default = 100°F

Min Discharge Air Temperature

Limit 57 R/W AV 3805 N/A Default = 55°F Sets low limit on units equipped with

modulating or multistage heating

Min Discharge Air Heating


Max Discharge Air Heating


Energy Recovery

Energy Recovery Exhaust

Temperature 48 R AV 4210 Current reading of sensor

Energy Recovery Supply

Temperature 49 R AV 4205 Current reading of sensor

Dehumidification

Dehumidification Status 36 R AV 3675 N/A Indicates if dehumidification is active

Relative Humidity 66 R AI 805 N/A Displays value of optional relative humidity sensor

Dew Point Temperature 37 R AV 810 N/A Indicates current calculated dew point

Relative Humidity Control Type 66 R/W AV 3670 N/A 0=None, 1=RelHum, 2=DewPnt (Turns Dehumidification ON

and OFF)

Relative Humidity Setpoint 67 R/W AV 3660 N/A Relative humidity setpoint used when Relative Humidity

Control Type is set to RelHum

Dew Point Setpoint 37 R/W AV 3625 N/A Dew point setpoint used when Relative Humidity Control

Type is set to DewPnt

Schedule

Daily Schedule 33 R Sch 1460 MicroTech II keypad daily schedule (writes to Occupancy

BV-1455 at priority level 15). Not used if network scheduling

provided through supervisory controller

Holidays 53 R/W Cal 1465 MicroTech II keypad holiday date list (writes to Occupancy

BV-1455 at priority level 15). Not used if network scheduling provided through supervisory controller

Unit Configuration

Remote Discharge Fan Cap

Control Flag 67 R/W AV 3720 N/A 0=Duct Pres, 1=Position

Remote Discharge Fan Capacity

Spt 68 R/W AV 3725 N/A Default = 25%

Remote Return Fan Cap. Control

Flag 68 R/W AV 3750 0=None, 1=Tracking, 2=Bldg Press, 3=Position

Remote Return Fan Capacity Spt 69 R/W AV 3740 Default = 25%

Zone Temperature Setup

Space Setpoint Type 71 R/W AV 3615 N/A 0=Tstat, 1=Keypad/Network (Set to Network for network

control of setpoints)

Alarms

*(14) Alarm, Faults: Clear All 80 R/W BV 4150 Indicates Fault Alarm has occurred

*(15) Alarm, Problems: Clear All 81 R/W BV 4145 Indicates Problem Alarm has occurred

*(16) Alarm, Warnings: Clear

All 83 R/W BV 4140 Indicates Warning Alarm has occurred

Alarms (100 Series Application Software v1.44 and later)

Alarms-Fault Individual

Notification 78 R AV 4862 Individual notification of the highest priority active Fault

alarm enumeration

Alarms-Problem Individual

Notification 82 R AV 4861 Individual notification of the highest priority active Problem

alarm enumeration

Alarms-Warning Individual

Notification 83 R AV 4863 Individual notification of the highest priority active Warning

alarm enumeration

ED15060-12 21



Page

Read Or

Read/Write

Object Type


Alarms (200 Series Application Software v2.07 and v2.08)

Alarms-Fault Individual

Notification 81 R AV 4870 Individual notification of the highest priority active Fault

alarm enumeration

Alarms-Problem Individual

Notification 82 R AV 4872 Individual notification of the highest priority active Problem

alarm enumeration

Alarms-Warning Individual

Notification 83 R AV 4873 Individual notification of the highest priority active Warning

alarm enumeration

** To write a network value to the present value of this input, set the OUT-OF-SERVICE property to TRUE. If Network communications is lost with

OUT-OF-SERVICE set to TRUE, the unit controller uses the last value written.

Note: Objects that appear in multiple locations on the keypad are only listed in the location they first appear on the

keypad

Note: Analog values can be written to the MicroTech II unit controller via BACnet at a priority of 1 to 16, where 1 is the

highest priority and 16 is the lowest priority. All analog values written to the MicroTech II controller via BACnet

should be at a priority of 16. An analog value written via BACnet may be different from the corresponding value

actually used for control if it was written at a priority other than 16. This situation can happen when the value is

later changed via the keypad.

22

22 ED15060-13

LONWORKS Variables Network Control Property

Keypad attributes available as LONWORKS Variables for network control of the unit

Variable Name Page SNVT/SCP

T Index SCC DAC Description

System Summary

*(1) Unit Status nvoUnitStatus 72 112 Mode 0=AUTO, 1=HEAT, 2=MRNG_WRMUP,

3=COOL, 4=NIGHT_PURGE, 5=PRE_COOL, 6=OFF, 7=TEST, 8=EMERG_HEAT,

9=FAN_ONLY, 10=FREE_COOL, 11=ICE,

0XFF=NUL

Cooling Capacity nvoUnitStatus 31 112 Cool_Output Feedback of cooling capacity (%)

Heating Capacity nvoUnitStatus 50 112 Heat_Output Feedback of heating capacity (%)

*(2) Application Mode nviApplicMode 25 108 0=AUTO, 1=HEAT, 2=MRNG_WRMUP,

3=COOL, 4=NIGHT_PURGE, 5=PRE_COOL,

6=OFF, 7=TEST, 8=EMERG_HEAT,

9=FAN_ONLY, 10=FREE_COOL, 11=ICE,

12=MAX_HEAT

Occupancy

*(3) Occupancy nvoEffectOccup 59 109 0=OCCUPIED, 1=UNOCCUPIED, 2=BYPASS,

3=STANDBY, 0xFF=NUL

*(4) Occupancy Mode nviOccManCmd 59 109 0=OCCUPIED, 1=UNOCCUPIED, 2= BYPASS,

3=STANDBY, 0xFF=NUL

Occupancy Scheduler Input nviOccSchedule 61 128 Network schedule

Emergency Override Mode Flag nviEmergOverride 47 103 0=NORMAL, 1=PRESSURIZE,

2=DEPRESSURIZE, 3=PURGE, 4=SHUTDOWN, 5=FIRE, 0xFF=NUL

Temperature

*(5) Discharge Air Temperature nvoDischAirTemp 39 105 Current reading of sensor

*(6) Return Air Temperature nviRATemp 69 105 Network input of Return Temperature

*(6) Return Air Temperature nvoRATemp 69 105 Current reading of sensor

Space Temperature nviSpaceTemp 71 105 Network input of Space Temperature

Space Temperature nvoSpaceTemp 71 105 Current reading of sensor

*(7) Outdoor Air Temperature nviOutdoorTemp 65 105 Network input of Outdoor Air Temperature

*(7) Outdoor Air Temperature nvoOutdoorTemp 65 105 Current reading of sensor

Airflow Summary

Discharge Fan Status nvoUnitStatus 40 112 N/A Fan_Output 0% = OFF, 100% = ON

Return Fan Status nvoRetFanStatus 70 95 0=Off, 1=On , 0xFF=Undefined

Duct Pressure

Duct Static Pressure nvoDuctStatPress 41 113 N/A Current reading of sensor. If unit has two sensors the

lower of the two is displayed

Duct Static Pressure Setpoint nviDuctStaticSP 41 113 N/A Default = 1.00” WC

Discharge Fan Capacity nvoUnitStatus 40 112 N/A Fan_Output Current discharge fan capacity (%)

Building Pressure

*(8) Building Static Pressure nviBldgStatPress 27 113 Network input of Building Static Pressure

*(8) Building Static Pressure nvoBldgStatPress 27 113 Current reading of sensor value

*(9) Building Static Pressure Setpoint nviBldgStaticSP 27 113 Default = 0.050” WC

Return Fan Capacity nvoRetFanStatus 69 95 Current return or exhaust fan capacity (%)

Zone Cooling

Effective Cooling Enable Setpoint nvoEffectSetpt 44 105 Current cooling enable setpoint which the unit will

use in the cooling mode

*(11) Occupied Cooling Setpoint nciSetpoints

SCPTsetPnts 62 106/60 Occupied_Cool Default = 75°F

*(10) Unoccupied Cooling Setpoint nciSetpoints

SCPTsetPnts 75 106/60 Unnoccupied_Cool Default = 85°F

ED15060-12 23





Zone Heating

Effective Heating Enable Setpoint nvoEffectSetpt 45 105 Current heating enable setpoint which the unit will

use in the heating mode

*(12) Occupied Heating Setpoint nciSetpoints

SCPTsetPnts 63 106/60 Occupied_Heat Default = 70°F

*(13) Unoccupied Heating Setpoint nciSetpoints

SCPTsetPnts 76 106/60 Unoccupied_Heat Default = 55°F

Discharge Cooling

Effective Cooling Discharge Setpoint nvoEffDATempSp 44 105 N/A Current discharge air setpoint which the unit will use

in the cooling mode

Discharge Air Cooling Setpoint nviDAClSP 38 105 N/A Default = 55°F

Min Discharge Air Cooling Setpoint nciMinDAC1SP

SCPTminDischarge

AirCoolingSetpoint

56 105/206 Default = 55°F

Max Discharge Air Cooling Setpoint nciMaxDAC1SP

SCPTmaxDischarge

AirCoolingSetpoint

55 105/205 Default = 65°F

Clg Reset nciCoolResetEn

SCPTcoolingResetE

nable

32 95/211 N/A State 0 = None, 1 = Value has meaning Value 0 =

None, 1 = Space, 2 = Return, 3 = OAT, 4 = Ext mA,

5 = Ext V, 6 = Airflow

OA Damper

Outdoor Air Damper Position nvoUnitStatus 64 112 Economizer_Output Feedback value (%)

Effective Min Outdoor Damper Pos Spt nviOAMinPos 46 81 Current OA damper min position setpoint (%)

Outdoor Air Flow nvoOAFlow 65 15 Current outdoor air flow on units with optional

DesignFlow (CFM)

Economizer Enable nviEconEnable 43 95 Enables or disables economizer via two properties:

State=0, economizer disabled

State=1, economizer enabled via LON

Value=0 and State=1, economizer disabled via LON

Value>0 and State=1, economizer enabled via LON

OA Ambient nvoEconEnabled 58 95 Indicates whether outside air is suitable for free

cooling

Outdoor Air Damper Min Position nciOAMinPos

SCPTminRnge 64 81/23 Default = 10%

Min Outdoor Airflow/Damper Position nviMinOAFlowSP 57 15 Sets the Effective Min Outdoor Damper Position Stp

when Design Flow is set to YES

Discharge Heating

Effective Heating Discharge Setpoint nvoEffDATempSp 45 105 N/A Current discharge air setpoint which the unit will use

in the heating mode

Discharge Air Heating Setpoint nviDAHtSP 39 105 Default = 100°F

Min Discharge Air Heating Setpoint nciMinDAHtSP

SCPTminDischarge

AirHeatingSetpoint

56 105/208 Default = 60°F

Max Discharge Air Heating Setpoint nciMaxDAHtSP

SCPTmaxDischarge

AirHeatingSetpoint

55 105/207 Default = 120°F

Htg Reset nciHeatResetEn

SCPTheatingResetE

nable

52 95/212 N/A State 0 = None, 1 = Value has meaning Value 0 =

None, 1 = Space, 2 = Return, 3 = OAT, 4 = Ext mA,

5 = Ext V

Dehumidification

Dehumidification Status nvoDehumidifier 36 95 N/A 0% = Off, 100%= On

Relative Humidity nviSpaceRH 66 81 Network input

Relative Humidity nvoSpaceRH 66 81 N/A Value of optional relative humidity sensor or

network input

Dew Point Temperature nvoSpaceDewPt 37 105 N/A Indicates current calculated dew point (calculated

from Relative Humidity)

Relative Humidity Setpoint nviSpaceDehumSP 67 81 N/A Relative humidity setpoint used when Relative

Humidity Control Type is set to RelHum

24

24 ED15060-13





Unit Configuration

Remote Discharge Fan Capacity Spt nviSupFanCap 68 81 N/A Default = 25% Sets the discharge air vane position or

VFD speed when Discharge Fan Capacity Control

Flag is set to POSITION

Timer Settings

Local Bypass Time nciBypassTime

SCPTbypassTime 55 123/34 Sets the max amount of time that the controller can

be in Bypass mode

Alarms

In Alarm nvoUnitStatus 54 112 In_Alarm

0 = No Alarm

*(14) Alarm, Fault: Clear All nviAlarmFault 80 95 Clear all Fault Alarms. Change state part of SNVT

from 1 (Alarm) to 0 (Normal).

*(15) Alarm, Problems: Clear All nviAlarmProblem 81 95 Clear all Problem Alarms. Change state part of

SNVT from 1 (Alarm) to 0 (Normal).

*(16) Alarm, Warnings: Clear All nviAlarmWarning 83 95 Clear all Warning Alarms. Change state part of

SNVT from 1 (Alarm) to 0 (Normal).

Non-Keypad Variables

HVAC Unit Type Identifier nciHvacType

SCPThvacType 54 145/169 N/A Equipment Type = RoofTop

Minimum Send Time nciMinOutTm

SCPTminSendTime 58 107/52 Defines min period of time between automatic

network variable output time (reducing traffic on network)

Receive Heartbeat nciRcvHrtBt

SCPTmaxRcvTime 66 107/48 Default is 0 seconds

Send Heartbeat nciSndHrtBt SCPTmaxSendTime

70 107/49 Default is 0 seconds

Temperature Setpoint Input nviSetpoint 72 105 Adjusts effective heat enable and effective cool

enable setpoint via the network. Effective Heat SP = nviSetpoint –

0.5 (Occupied_Cool – Occupied_Heat).

Effective Cool SP = nviSetpoint +

0.5 (Occupied_Cool – Occupied_Heat).

Note: Objects that appear in multiple locations on the keypad are only listed in the location they first appear on the keypad

ED15060-12 25

Detailed Data Point Information

The data points or properties (attributes) defined in this section reference data that is generated in the MicroTech II Applied

Rooftop Unit Controller.

AHU ID Keypad Menu Path Setup/Service\Unit Configuration\AHU ID=

This read-only property identifies the version of application software loaded into the unit controller.

Measurement Units Data Type Valid Range Default Value

NA NA Real NA NA

BACnet Object Identifier Property


Application 236 52 AHU ID 63002

Full Reference

MTII RTUC #########.Applications.McQ.RT.AHU ID

Airflow Status Keypad Menu Path Airflow\Airflow Summary\Flow Status=

This read-only property indicates discharge airflow status. A binary-differential pressure switch senses this airflow status.


Status NA Real Enumerated NA



Binary Input 3 160 Present Value 85

Full Reference

MTII RTUC #########.Applications.McQ.RT.Airflow Switch.Present Value

Enumeration

0 = Noflo

1 = Flow

Application Mode Keypad Menu Path System Summary\System\Appl Mode=

This read/write attribute sets the unit in an application mode (auto, off, heat only, cool only, fan only, or dehumidification).

Application Mode does not "force" the unit into any state. However, it disables certain unit operation. For example, an

Application Mode of "Cool Only" disables heating, "Heat Only" disables cooling, and "Fan Only" disables heating and

cooling. attribute has no affect unless Control Mode is set to Auto. Control Mode is only set at the keypad/display.

This attribute uses maximum and minimum limits set with the unit keypad. If the Present Value is set beyond these limits

from the network, the Reliability attribute of the object indicates Out of Range Low or Out of Range High (whichever is

appropriate). When this happens, the application detects the out of range condition and restores the Present Value to the

previous valid value (i.e., within the limits) it had before being set out of range.


Mode NA Real Enumerated NA

26

26 ED15060-13



Analog Value 2 3605 Present Value 85

Full Reference

MTII RTUC #########.Applications.McQ.RT.Application Mode MAV.Present Value

Enumeration

0 = Auto

1 = Off

2 = Heat Only

3 = Cool Only

4 = Fan Only-

LONWORKS LONWORKS Name Profile SNVT Type SNVT Index

nviApplicMode DAC, SCC SNVT_hvac_mode 108

Enumeration Definitions Value Identifier Notes

0 HVAC_AUTO Controller automatically changes between application modes

1 HVAC_HEAT Heating only

2 HVAC_MRNG_WRMUP Application-specific morning warm-up

3 HVAC_COOL Cooling only

4 HVAC_NIGHT_PURGE Application-specific night purge

5 HVAC_PRE_COOL Application-specific pre-cool

6 HVAC_OFF Controller not controlling outputs

7 HVAC_TEST Equipment being tested

8 HVAC_EMERG_HEAT Emergency heat mode (heat pump)

9 HVAC_FAN_ONLY Air not conditioned, fan turned on

10 HVAC_FREE_COOL Cooling with compressor not running

11 HVAC_ICE Ice-making mode

12 HVAC_MAX_HEAT

13 HVAC_ECONOMY Controller automatically changes between application modes

14 HVAC_DEHUMID Controller automatically changes between application modes

0xFF HVAC_NUL Value not available

Enumeration Correspondence BACnet Application Mode Lon SNVT_hvac_mode

0 Auto 0 HVAC_AUTO

2 Heat Only 1 HVAC_HEAT

2 Heat Only 2 HVAC_MRNG_WRMUP

3 Cool Only 3 HVAC_COOL

3 Cool Only 4 HVAC_NIGHT_PURGE

3 Cool Only 5 HVAC_PRE_COOL

1 Off 6 HVAC_OFF

0 Auto 7 HVAC_TEST

2 Heat Only 8 HVAC_EMERG_HEAT

4 Fan Only 9 HVAC_FAN_ONLY

3 Cool 10 HVAC_FREE_COOL

0 Auto 11 HVAC_ICE

2 Heat Only 12 HVAC_MAX HEAT

0 Heat Only 12 HVAC_ECONOMY

0 Heat Only 12 HVAC_MAX DEHUMID

0 Heat/Cool 0xFF HVAC_NUL

ED15060-12 27

Building Static Pressure Keypad Menu Path Airflow\Bldg Pressure\Bldg Press=

This read/write property connects a network building static pressure sensor or network output from another controller.

When a building static pressure sensor is locally wired to the controller, this variable has priority if a valid value is present.


Pressure (gauge) BACnet: WC

LONWORKS: kPa

Real BACnet: -0.250 – +0.250 WC

LONWORKS: -62.25 .. 62.25 Pa (1.0 Pa)

NA



Analog Input 0 1505 Present Value 85

Full Reference

MTII RTUC #########.Applications.McQ.RT.Static P Select.Building Static Pres.Present Value


nvoBldgStatPress DAC, SCC SNVT_press_p 113

nviBldgStatPress DAC, SCC SNVT_press_p 113

Building Static Pressure Dead Band Keypad Menu Path Airflow\Bldg Pressure\BSP Db=

This read/write property sets a dead band around the Building Static Pressure Setpoint (See below.) No building static

pressure control action is taken when the current building static pressure input is within this dead band.


Pressure (gauge) BACnet: WC Real BACnet: 0.001-0.100 WC NA



PID 252 565 Deadband 2205

Full Reference

MTII RTUC #########.Applications.McQ.RT.RF Cap Ctrl.Bldg Stat PID.Deadband

Building Static Pressure Setpoint Keypad Menu Path Airflow\Bldg Press\Bldg SP Spt=

This read/write property sets the building static pressure setpoint used for controlling the return air or exhaust fan inlet

vanes or VFD. The inlet vanes or VFD is modulated to maintain the building static pressure sensor input at this Setpoint.






Pressure (gauge) BACnet: WC

LonWorks: kPa

Real BACnet: -0.250 – +0.250 WC

LONWORKS: -62.25 .. 62.25 Pa (1.0 Pa)

NA




Full Reference

MTII RTUC #########.Applications.McQ.RT.RF Cap Ctrl.Bldg Static P Spt AV.Present Value


nviBldgStaticSP DAC, SCC SNVT_press_p 113

28

28 ED15060-13

Bypass Hours Keypad Menu Path Setup/Service\Operating Hours\Bypass= This read-only property indicates the hours of schedule-bypass operation. This value accumulates to 65,535 hours before rolling

over.


Time Hours Real 0-65,535 hours NA



Runtime Totalization 275 1530 Present Value 85

Full Reference

MTII RTUC #########.Applications.McQ.RT.Bypass Op Time.Present Value

Chilled Water Capacity Keypad Menu Path System Summary\System\Clg Capacity= Or Temperatures\Zone Cooling\Clg Capacity= Or Temperatures\Discharge Cooling\Clg Capacity=

This read-only attribute indicates the current percentage of unit maximum chilled water flow. This attribute is only valid

when Design Flow is not active (i.e., Design Flow is set to No on the keypad/display).


Per cent NA Real 0-100% NA




Full Reference

MTII RTUC #########.Applications.McQ.RT.Cooling.Clg Capacity AV.Present Value

Compressor 1 Operating Hours Keypad Menu Path Setup/Service\Operating Hours\Comp 1=

This read-only property indicates the hours compressor #1 has been operating. This value accumulates to 65,535 hours

before rolling over.






Full Reference

MTII RTUC #########.Applications.McQ.RT.Cooling.C1 Comp 1 Runtime.Present Value









Full Reference


ED15060-12 29









Full Reference










Full Reference










Full Reference


30

30 ED15060-13









Full Reference


Compressor Outdoor Air Temperature Lockout Keypad Menu Path System Summary\Zone Cooling\OATClg Lock=

This read/write property indicates the Compressor Outdoor Air Temperature Lockout setpoint.


Temperature °F Real 0-100 55




Full Reference

MTII RTUC #########.Applications.McQ.RT.Cooling.OA Comp Lock AV

Control Temperature Keypad Menu Path System Summary\Temperatures\Control Temp= Or Temperatures\Zone Cooling\Control Temp= Or Temperatures\Zone Heating\Control Temp=

This read-only property indicates the value of the current temperature input selected by the Control Temperature Source

data point.


Temperature °F Real NA




Full Reference

MTII RTUC #########.Applications.McQ.RT.Control Temperature.Present Value

Control Temperature Source Keypad Menu Path Temperatures\Zone Cooling\CtrlTemp Src= Or Temperatures\Zone Heating\CtrlTemp Src=

This read/write property selects the temperature sensor used for the unit heating/cooling changeover decision. This attribute

uses maximum and minimum limits set with the unit keypad. If the Present Value is set beyond these limits from the

network, the Reliability attribute of the object indicates Out of Range Low or Out of Range High (whichever is appropriate).

When this happens, the application detects the out of range condition and restores the Present Value to the previous valid

value (i.e., within the limits) it had before being set out of range.


NA NA Real Enumerated NA

ED15060-12 31




Full Reference

MTII RTUC #########.Applications.McQ.RT.Ctrl Temp Src MAV.Present Value

Enumeration

0 = Return

1 = Space

2 = OAT

Cooling Capacity Keypad Menu Path System Summary\System\Clg Capacity= Or Temperatures\Zone Cooling\Clg Capacity= Or Temperatures\Discharge Cooling\Clg Capacity=

This read-only property indicates the current percentage of unit maximum cooling capacity.

The BACnet property reads only the subject attribute; however the LONWORKS variable is only a part of the LONWORKS

Unit Status network variable. See Unit Status on page 72 for details of LONWORKS network variable.

The BACnet property only applies to the subject data point. The LONWORKS variable covers six other data points: Unit

Status (See page 72),

Heating Capacity (See page 50), Discharge Fan Status (See page 40), Discharge Fan Capacity (See page 40), Outdoor Air

Damper Position (See page 64), and In Alarm (See page 54).


Percent NA BACnet: Real

LONWORKS: Structure

0-100% NA




Full Reference

MTII RTUC #########.Applications.McQ.RT.Cooling.Clg Capacity AV.Present Value


nvoUnitStatus_cool_output DAC, SCC SNVT_hvac_status 112

Cooling Control Status Keypad Menu Path System Summary\System\Clg Status=

This read-only property indicates whether cooling (economizer or mechanical) is currently allowed. If cooling is disabled,

the reason is indicated.


Status NA Real Enumerated NA




Full Reference

MTII RTUC #########.Applications.McQ.RT.Cooling.Clg Status MAV.Present Value

32

32 ED15060-13

Enumeration

0 = All Clg

1 = Econo

2 = Mech Clg

3 = Off Amb

4 = Off Alarm

5 = Off None

6 = Off Bal

7 = Off Sw

8 = Off Net

9 = Off Man

Cooling Operating Hours Keypad Menu Path Setup/Service\Operating Hours\Mech Cool=

This read-only property indicates the hours of unit mechanical cooling. The value accumulates to 65,535 hours before

rolling over.






Full Reference

MTII RTUC #########.Applications.McQ.RT.Cooling Op Time.Present Value

Cooling Reset Enable State Keypad Menu Path No Keypad Equivalent

This read/write configuration property enables or disables the discharge air temperature cooling reset control for the

Discharge Air Controller.

Note: When this property is enabled, the type of cooling discharge temperature reset is determined by the object (See

Cooling Reset Enable Value on page 33).


State NA BACnet: Boolean

LONWORKS: Structure

Enumerated NA



Application 236 790 Cooling Stpt Status 940

Full Reference

MTII RTUC #########.Applications.McQ.RT.Cooling.Cooling Stpt Status

Enumeration

0 = Disabled, 1= Enabled

LONWORKS LONWORKS Name Profile SCPT Reference SCPT Index SNVT Type SNVT Index

nciCoolResetEn_state DAC SCPTcoolingResetEn 211 SNVT_switch 95

Structure

typedef struct {

unsigned value; Enumerated

signed state; 0=Disabled, 1=Enabled

} SNVT_switch;

ED15060-12 33

Cooling Reset Enable Value Keypad Menu Path Temperatures\Discharge Cooling\Clg Reset=

This read/write configuration property indicates the type of discharge air temperature cooling reset control enabled for

BACnet only. Cooling Reset Enable State (See page 32) must be enabled or this property has no effect.


State NA Real Enumerated NA



Application 236 790 Effective Value 50043

Full Reference

MTII RTUC #########.Applications.McQ.RT.Cooling.Effective Value

Enumeration

0 = None

1 = Space

2 = Return

3 = OAT

4 = Ext Ma

5 = Ext V

6 = Air Flow

LONWORKS

Note: Selecting True does not change the type of Cooling Reset. Selecting False disables Cooling Reset.

LONWORKS Name Profile SCPT Reference SCPT Index SNVT Type SNVT Index

nciCoolResetEn_value DAC SCPTcoolingResetEn 211 SNVT_switch 95

Structure

typedef struct {

unsigned value; 0-255

signed state; 0=Disabled

1=Enabled

} SNVT_switch;

Daily Schedule Keypad Menu Path No Direct Keypad Equivalent

This is the MicroTech II object that specifies the normal weekly schedule. It contains four adjustable properties that set the

weekly schedule.

Time period that the schedule is effective

Schedule for each day of the week

Exceptions to the schedule

Property that controls the unit

BACnet Standard BACnet object type of Schedule.

Effective Time Period Values Effective time period in days of BACnet Date Range data type. See ANSI/ASHRAE 135-2001 for a definition of data type.



Schedule 17 1460 Effective Period 32

Full Reference

MTII RTUC #########.Schedule.Occupancy Schedule.Effective Period

34

34 ED15060-13

Weekly Schedule Values Weekly schedule in a seven element BACnet Array of BACnet Daily Schedule data type. See ANSI/ASHRAE 135-2001 for

a definition of the data type.



Schedule 17 1460 Weekly Schedule 123

Full Reference

MTII RTUC #########.Schedule.Occupancy Schedule.Weekly Schedule

Exception Schedule Values Exception schedule of days as a sequence of BACnet Special Events data type. See ANSI/ASHRAE 135-2001 for a

definition of the data type.



Schedule 17 1460 Exception Schedule 38

Full Reference

MTII RTUC #########.Schedule.Occupancy Schedule.Exception Schedule

List of Property References Values MicroTech II rooftop object properties as a sequence of BACnet Object Property Reference data type. See ANSI/ASHRAE

135-2001 for a definition of the data type.



Schedule 17 1460 List of Prop Refs 54

Full Reference

MTII RTUC #########.Schedule.Occupancy Schedule.List of Prop Refs

ED15060-12 35

Date Keypad Menu Path Setup/Service\Time/Date\Date

This read/write property sets the current date of the form day, month, year, and day of the week.

Values

Dates as BACnet date data types. See ANSI/ASHRAE 135-2001 for a definition of the data type.



Device 8 10 Local Date 56

Full Reference

MTII RTUC #########.Local Date

Dehumidification Control Keypad Menu Path Setup/Service\Dehum Setup\Dehum Ctrl=

This read/write property determines when dehumidification can operate. If it is set to Occupied, dehumidification can only

operate during occupied times. If it is set to Always, dehumidification can operate during occupied and unoccupied times.


NA NA Date NA NA



Application 236 790 Dehum Ctrl 63307

Full Reference

MTII RTUC #########.Applications.McQ.RT.Cooling.Dehum Ctrl

Enumeration

0 = Occupied

1 = Always

Dehumidification: Maximum Cooling Stages Keypad Menu Path Setup/Service\Dehum Setup\Maximum Stages=

This read/write property sets the maximum number of cooling stages that can be active during a dehumidification operation.


Count Stage Real 1–8 NA



Application 236 790 Dehum Max Stages 63308

Full Reference

MTII RTUC #########.Applications.McQ.RT.Cooling.Dehum Max Stages

Dehumidification: Minimum Cooling Stages Keypad Menu Path Setup/Service\Dehum Setup\Minimum Stages=

This read/write property sets the number of cooling stages that are immediately activated during a dehumidification

operation


Count Stage Real 1–8 NA



Application 236 790 Dehum Min Stages 63310

Full Reference

MTII RTUC #########.Applications.McQ.RT.Cooling.Dehum Min Stages

36

36 ED15060-13

Dehumidification Operating Hours Keypad Menu Path Setup/Service\Operating Hours\Dehumidify=

This read-only property indicates the hours of Dehumidification. This value accumulates to 65,535 hours before rolling

over.






Full Reference

MTII RTUC #########.Applications.McQ.RT.Dehum Op Time.Present Value

Dehumidification Status Keypad Menu Path Humidity\Dehumidification\Dehum Status=

This read-only property indicates whether or not dehumidification operation is active.


State NA BACnet: Real

LONWORKS:Structure

Enumerated NA

Note: The keypad/display returns Off (False or On (True).




Full Reference

MTII RTUC #########.Applications.McQ.RT.Cooling.Dehum Status AV. Present Value

Enumeration

0 = False

1 = True

LONWORKS Variable LONWORKS Name Profile SNVT Type SNVT Index

nvoDehumidifier_state SCC SNVT_switch 95

Structure

typedef struct {

unsigned value; Not Used

signed state; 0=False

1=True

} SNVT_switch;

ED15060-12 37

Dew Point Dead Band Keypad Menu Path Humidity\Dehumidification\DewPnt Db=

This read/write property sets a deadband around the dew point setpoint.


Temperature °F Real 0-10°F NA



Application 236 790 Dew Point Deadband 63314

Full Reference

MTII RTUC #########.Applications.McQ.RT.Cooling.Dew Point Deadband

Dew Point Setpoint Keypad Menu Path Humidity\Dehumidification\DewPoint Spt=

This read/write property sets the dew point setpoint.










Full Reference

MTII RTUC #########.Applications.McQ.RT.Cooling.Dew Point Spt AV.Present Value

LONWORKS The percentage value provided in nviSpaceDehumSP is converted to a Dew Point setpoint temperature between 0°F and

100°F. For example 50% becomes 50°F. See Relative Humidity Setpoint on page 67.

Dew Point Temperature Keypad Menu Path Humidity\Dehumidification\DewPoint =

This read-only attribute indicates the current dew point calculated from the current reading of the optional relative humidity

sensor.


Temperature BACnet: °F

LONWORKS: °C

Real BACnet: -50°–250°F

LONWORKS: -46°–121°C

NA




Full Reference

MTII RTUC #########.Applications.McQ.RT.Cooling.Dew Pt Temperature.Present Value


nvoSpaceDewPt SCC SNVT_temp_p 105

38

38 ED15060-13

Discharge Air Cooling Dead Band Keypad Menu Path Temperatures\Discharge Cooling\Clg Db=

This read/write property sets a dead band around the

Effective Cooling Discharge Setpoint (See on page 44.)


Temperature °F Real 0.0°–10.0°F NA



Application 236 790 DAT Clg Deadband 63302

Full Reference

MTII RTUC #########.Applications.McQ.RT.Cooling.DAT Clg Deadband

Discharge Air Cooling Setpoint Keypad Menu Path Temperatures\Discharge Cooling\DAT Clg Spt=

This read/write property sets the

Effective Cooling Discharge Setpoint (See on page 44.) This setpoint is set to this value when it is not being set by a reset

schedule.







LONWORKS: °C

Real BACnet: 40.0–100.0 °F

LONWORKS: 4°–38°C

NA




Full Reference

MTII RTUC #########.Applications.McQ.RT.Cooling.DAT Clg Spt AV.Present Value


nviDAClSP DAC SNVT_temp_p 105

ED15060-12 39

Discharge Air Heating Dead Band Keypad Menu Path Temperatures\Discharge Heating\Htg Db=

This read/write property sets a dead band around the Effective Heating Discharge Setpoint (See on page 45.)





Application 236 615 DAT Htg Deadband 63305

Full Reference

MTII RTUC #########.Applications.McQ.RT.Heating.DAT Htg Deadband

Discharge Air Heating Setpoint Keypad Menu Path Temperatures\Discharge Heating\DAT Htg Spt=

This read/write property sets the Effective Heating Discharge Setpoint (See on page 45.) The Effective Heating Discharge

Setpoint (See page 45) is set to this value when it is not being reset by a reset schedule.







LONWORKS: °C

Real BACnet: 40.0–140.0°F


NA




Full Reference

MTII RTUC #########.Applications.McQ.RT.Heating.DAT Htg Spt AV.Present Value


nviDAHtSP DAC SNVT_temp_p 105

Discharge Air Temperature Keypad Menu Path System Summary\Temperatures Or Temperatures\Discharge Cooling\Disch Air= Or Temperatures\Discharge Heating\Disch Air=

This read-only property indicates the current reading of the unit discharge air temperature sensor.



LONWORKS: °C

Real BACnet: 0.0–275.0°F


NA




Full Reference

MTII RTUC #########.Applications.McQ.RT.DA Temperature.Present Value

LONWORKS LONWORKS Name Profile SNVT Type Number

nvoDischAirTemp DAC, SCC SNVT_temp_p 105

40

40 ED15060-13

Discharge Fan Capacity Keypad Menu Path Airflow\Duct Pressure\Disch Fan Cap=

This read-only attribute indicates the current discharge fan capacity. The BACnet property reads only the subject attribute;

however the LONWORKS variable is only a part of the LONWORKS Unit Status network variable. See Unit Status on page 72

for details of LONWORKS network variable.


Status (See page 72), Cooling Capacity (See page 31),

Heating Capacity (See page 50), Discharge Fan Status (See page 40), Outdoor Air Damper Position (See page 64), and In

Alarm (See page 54).


Discharge Fan Capacity Percent BACnet: Real

LONWORKS: Structure

BACnet: 0-100%

LONWORKS: 0%=Off and 100%=On

NA




Full Reference

MTII RTUC #########.Applications.McQ.RT.DF Cap Ctrl.DF Cap Ctrl PV AV.Present Value


nvoUnitStatus_fan_output SCC SNVT_hvac_status 112

Discharge Fan Status Keypad Menu Path Airflow\Airflow Summary\Disch Fan=

This read-only property indicates whether the controller is commanding the unit discharge fan on.

The BACnet property only applies to the subject data point. The LonWorks variable covers six other data points: Unit Status

(See page 72), Cooling Capacity (See page 31),

Heating Capacity (See page 50), Discharge Fan Capacity (See page 40), Outdoor Air Damper Position (See page 64), and In

Alarm (See page 54).


Discharge Fan Status Percent BACnet: Real

LONWORKS: Structure

0-100% NA



Binary Output 4 255 Present Value 85

Full Reference

MTII RTUC #########.Applications.McQ.RT.Start Stop Control.DF On Off.Present Value

Enumeration

0 = Off

1 = On


nvoUnitStatus_fan_output SCC SNVT_hvac_status 112

ED15060-12 41

Duct Static Pressure Keypad Menu Path Airflow\Duct Pressure\Duct Press=

This read-only attribute indicates the current reading of the duct static pressure sensor. When a unit is equipped with two

duct static pressure sensors, this attribute displays the lower of the two sensor readings. Static pressure control is then based

on the lower of the two readings.


Pressure (gauge) BACnet: IWC

LONWORKS: Pa

Real BACnet: 0–4 IWC

LONWORKS: 0–1000 Pa (1.0 Pa)

NA




Full Reference

MTII RTUC #########.Applications.McQ.RT.Static P Select.Duct Press AV.Present Value


nvoDuctStatPress DAC SNVT_press_p 113

Duct Static Pressure Dead Band Keypad Menu Path Airflow\Duct Pressure\DSP Db=

This read/write property sets a dead band around the Duct Static Pressure Setpoint (See page 41.) No duct static pressure

control action is taken when the current duct static pressure input is within this dead band.


Pressure (gauge) BACnet: IWC Real BACnet: 0.00–0.50 IWC NA



PID 252 505 Deadband 2205

Full Reference

MTII RTUC #########.Applications.McQ.RT.DF Cap Ctrl.Duct Stat PID.Deadband

Duct Static Pressure Setpoint Keypad Menu Path Airflow\Duct Press\DuctSP Spt=

This read/write property sets the duct static pressure setpoint used to control the discharge air fan inlet vanes or VFD.






Pressure (gauge) BACnet: IWC

LONWORKS: Pa

Real BACnet: 0.20–4.00 IWC

LONWORKS: 50–1000 Pa (1.0 Pa)

NA




Full Reference

MTII RTUC #########.Applications.McQ.RT.DF Cap Ctrl.Duct SP Spt AV.Present Value

42

42 ED15060-13


nviDuctStaticSP DAC SNVT_press_p 113

nvoEffDuctStatSP DAC SNVT_press_p 113

Economizer Changeover Differential Keypad Menu Path Temperatures\OA Damper\EconChgovrDiff=

This read/write property sets a differential above the Economizer Changeover Temperature Setpoint (See on page 43.)

When Economizer Changeover Method is set to Dry Bulb, economizer operation is disabled when the Outdoor Air

Temperature (See on page 65) is above the Economizer Changeover Temperature Setpoint by more than this differential. If

Economizer Changeover Method is set to Enthalpy, this property has no effect on unit operation.


Temperature BACnet: °F Real 0–10 °F NA



Application 236 425 Temp Differential 962

Full Reference

MTII RTUC #########.Applications.McQ.RT.Damper Ctrl.Temp Differential

Economizer Changeover Method Keypad Menu Path Temperatures\OA Damper\EconChgovr=

This read/write property determines the method that makes the economizer changeover decision. When it is set to Enthalpy,

the decision is based on the enthalpy switch. When the switch is closed, OA Ambient indicates Low and economizer

operation is enabled. When the switch is open, OA Ambient indicates High and economizer operation is disabled. When it is

set to Dry Bulb, the economizer changeover decision is based on the outdoor air temperature compared to the Economizer

Changeover Temperature Setpoint (See on page 43.). When the outdoor air temperature is below the Economizer

Changeover Temperature Setpoint, OA Ambient indicates Low and economizer operation is enabled. When the outdoor air

temperature is above the Economizer Changeover Temperature Setpoint (See on page 43.) by more than the Economizer

Changeover Differential, OA Ambient indicates High and economizer operation is disabled.






Method NA Real Enumerated NA




Full Reference

MTII RTUC #########.Applications.McQ.RT.Damper Ctrl.Econ Chgovr MAV.Present Value

Enumeration

0 = Enthalpy

1 = Dry Bulb

ED15060-12 43

Economizer Changeover Temperature Setpoint Keypad Menu Path Temperatures\OA Damper\EconChgovrT=

This read/write property sets the outdoor temperature that enables or disables the economizer operation when Economizer

Changeover Method (See on page 42.) is set to Dry Bulb. If Economizer Changeover Method is set to Enthalpy, this

parameter has no effect on the unit operation.






Temperature °F Real 0–99°F NA




Full Reference

MTII RTUC #########.Applications.McQ.RT.Damper Ctrl.Econ Chgovr Temp AV.Present Value

Economizer Enable Keypad Menu Path No Keypad Equivalent

This read/write configuration property enables or disables the economizer. The point nviEconEnable has 2 properties; a

State and a Value. When the State = 0, Economizer control through the network is disabled. When State = 1, the

Economizer can be controlled through the network. When the Value = 0 and the State = 1, the Economizer is disabled

through the Lon network. When the Value is greater than zero and the State = 1, the Economizer is enabled through the Lon

network.


State NA LONWORKS: Structure Enumerated NA


nviEconEnable DAC, SCC NA NA SNVT_switch 95

Structure

typedef struct {



1=Enabled

} SNVT_switch;

Economizer Operating Hours Keypad Menu Path Setup/Service\Operating Hours\Economizer=

This read-only attribute indicates the hours that the unit has been in the Economizer operating state. This value accumulates

to 65,535 hours before rolling over.






Full Reference

MTII RTUC #########.Applications.McQ.RT.Economizer Op Time.Present Value

44

44 ED15060-13

Effective Cooling Discharge Setpoint Keypad Menu Path Temperatures\Discharge Cooling\Eff Clg Spt=

This read-only attribute reveals the cooling discharge air temperature setpoint that the controller is currently using. When

the unit is in a cooling state, economizer dampers and/or mechanical cooling are controlled to maintain the unit discharge air

temperature input at this temperature. The controller either sets this attribute to the Discharge Air Cooling Setpoint (See on

page 38) or to a value based on the results of a discharge air temperature reset schedule.


Temperature °F Real 40.0–100.0 °F NA




Full Reference

MTII RTUC #########.Applications.McQ.RT.Cooling.Eff DAT Clg Spt AV.Present Value

LONWORKS See Effective Discharge Air Temperature Setpoint.

Effective Cooling Enable Setpoint Keypad Menu Path Temperatures\Zone Cooling\Eff Clg Spt=

This read-only attribute reveals the cooling changeover setpoint that the controller is currently using. When (See on page

29) rises above this value by more than one-half the Occupied Cooling Dead Band (See page 62), cooling operation is

enabled. When the Control Temperature drops below this value by more than one-half the Occupied Cooling Dead Band,

cooling operation is disabled. The controller sets this attribute to the Occupied Cooling Setpoint (See on page 62.) For space

comfort control, the controller sets this attribute based on the optional space sensor setpoint adjustment setting when the

Space Setpoint Type (See page 71) is set to Tstat.


Temperature °F Real 0–99.0 °F NA




Full Reference

MTII RTUC #########.Applications.McQ.RT.Cooling.Eff Zone Clg Spt AV.Present Value

LONWORKS See Effective Setpoint Output.

ED15060-12 45

Effective Discharge Air Temperature Setpoint Keypad Menu Path No Keypad Equivalent

This read-only attribute reveals the effective discharge air temperature setpoint that the unit is using for control. This

attribute is set equal to the Effective Heating Discharge Setpoint (See page 45) when the unit is in the heating operating

state and equal to the

Effective Cooling Discharge Setpoint (See page 44) when the unit is in any other operating state.


Temperature °C Fixed Point Scalar - signed long -273.17 .. +327.66°C (0.01°C). NA

BACnet See Effective Cooling Discharge Setpoint and Effective Heating Discharge Setpoint.


nvoEffDATempSp DAC SNVT_temp_p 105

Effective Heating Discharge Setpoint Keypad Menu Path Temperatures\Discharge Heating\Eff Htg Spt=

This read-only attribute reveals the heating discharge air temperature setpoint that the controller is currently using. When

the unit is in a heating operating state, heating capacity is controlled to maintain the unit discharge air temperature input at

this setpoint (except when the unit is equipped with single stage heat). The controller sets this attribute either to the

Discharge Air Heating Dead Band

Keypad Menu Path Temperatures\Discharge Heating\Htg Db=

This read/write property sets a dead band around the Effective Heating Discharge Setpoint (See on page 45.)





Application 236 615 DAT Htg Deadband 63305

Full Reference

MTII RTUC #########.Applications.McQ.RT.Heating.DAT Htg Deadband

Discharge Air Heating Setpoint (See on page 39) or to a value based on the results of a discharge air temperature reset

schedule.






Full Reference

MTII RTUC #########.Applications.McQ.RT.Heating.Eff DAT Htg Spt AV.Present Value

LONWORKS See Effective Discharge Air Temperature Setpoint.

46

46 ED15060-13

Effective Heating Enable Setpoint Keypad Menu Path Temperatures\Zone Heating\Eff Htg Spt=

This read-only attribute reveals the heating changeover setpoint that the controller is currently using. When the current (See

on page 29) falls below this parameter by more than one-half the Occupied Heating Dead Band (See page 63), heating

operation is enabled. When the current Control Temperature rises above this parameter by more than one-half the Occupied

Heating Dead Band heating operation is disabled. The controller sets this attribute to the Occupied Heating Setpoint (See on

page 63.) For space comfort control, the controller sets this attribute based on the optional space sensor setpoint adjustment

setting when the Space Setpoint Type (See page 71) is set to Tstat.


Temperature °F Real 0–99.0 °F NA




Full Reference

MTII RTUC #########.Applications.McQ.RT.Heating.Eff Zone Htg Spt AV.Present Value

LONWORKS See Effective Setpoint Output.

Effective Minimum Outdoor Damper Position Setpoint Keypad Menu Path Temperatures\OA Damper\Eff Min OA Pos=

This read-only attribute for BACnet networks and a read/write attribute for LONWORKS networks reveals the outdoor air

minimum position setpoint that the controller is currently using. Economizer dampers are controlled to maintain this

position for minimum ventilation.


Position Percent Real 0.0–100.0% NA




Full Reference

MTII RTUC #########.Applications.McQ.RT.Damper Ctrl.Eff Min OA Flow AV.Present Value


nviOAMinPos DAC, SCC SNVT_lev_percent 81

Effective Setpoint Output Keypad Menu Path No Keypad Equivalent

This a read-only attribute is only used in LONWORKS networks. It monitors the effective temperature setpoint. It is always

set equal to either the Effective Cooling Enable Setpoint (See page 44) or the point Effective Heating Enable Setpoint

depending on the current unit operating state.

The Effective Cooling Enable Setpoint and the Effective Heating Enable Setpoint depend on the Occupied Cooling Setpoint

(See page 62), Occupied Heating Setpoint (See page 63), and Temperature Setpoint Input (See page 72.) If the Temperature

Setpoint Input (nviSetpoint) is set to a valid value:

Effective Cooling Enable Setpoint = Temperature Setpoint Input

+½(Occupied Cooling Enable Setpoint–Occupied Heating Enable Setpoint)

Effective Heating Enable Setpoint = Temperature Setpoint Input

-½(Occupied Cooling Enable Setpoint–Occupied Heating Enable Setpoint)

Effective Setpoint Output (nvoEffectSetpt) equals Effective Heating Enable Setpoint when unit is in a heating operating

state and equals Effective Cooling Enable Setpoint in all other operating states.

ED15060-12 47

If the Temperature Setpoint Input (nviSetpoint) is set to a invalid value:

Effective Cooling Enable Setpoint = Occupied Cooling Enable Setpoint

Effective Heating Enable Setpoint = Occupied Heating Enable Setpoint

Effective Setpoint Output (nvoEffectSetpt) equals Effective Heating Enable Setpoint when unit is in a heating operating

state and equals Effective Cooling Enable Setpoint in all other operating states.

Note: On space comfort control units the Space Setpoint Type (See page 72) must not be set to Tstast, otherwise the

optional space sensor adjustment overrides Temperature Setpoint Input (nviSetpt).


Temperature °C Real -273.17°–+327.66°C (0.01°C). NA

BACnet See Effective Cooling Enable Setpoint and Effective Heating Enable Setpoint.


nvoEffectSetpt DAC, SCC SNVT_temp_p 105

Emergency Override Mode Flag Keypad Menu Path System Summary\Occupancy\Emerg Override=

This read/write property completely shuts the unit off. If this property is set to Off, the unit cannot start based on a time

clock or any other means. The only way the unit can be started is to change the value to Norm.










Full Reference

MTII RTUC #########.Applications.McQ.RT.Emerg Override MAV.Present Value

Enumeration

0 = Norm

1 = Off


nviEmergOverride DAC, SCC SNVT_hvac_emerg 103

Enumeration Definitions

Value Identifier Notes

0 EMERG_NORMAL No emergency mode

1 EMERG_PRESSURIZE Emergency pressurize mode

2 EMERG_DEPRESSURIZE Emergency depressurize mode

3 EMERG_PURGE Emergency purge mode

4 EMERG_SHUTDOWN Emergency shutdown mode

5 EMERG_FIRE

0xFF EMERG_NUL Value not available

48

48 ED15060-13

Enumeration Correspondence

BACnet Emergency Override Mode Flag Lon SNVT_hvac_emrg

0 Normal 0 EMERG_NORMAL

0 Normal 1 EMERG_PRESSURIZE

0 Normal 2 EMERG_DEPRESSURIZE

0 Normal 3 EMERG_PURGE

1 Off 4 EMERG_SHUTDOWN

5 EMERG_FIRE

0 Normal 0xFF EMERG_NUL

Energy Recovery Keypad Menu Path Temperatures\Energy Recovery\Energy Rec=

This read/write property turns the optional energy recovery system on and off.





Application 236 530 Heat Recovery 63442

Full Reference

MTII RTUC #########.Applications.McQ.RT.RF Cap Ctrl.Heat Recovery

Enumeration

0 = No

1 = Yes

Energy Recovery Exhaust Temperature Keypad Menu Path No Keypad Equivalent

This read only property indicates the current temperature from the unit exhaust air temperature sensor. This is the

temperature of exhaust air after it passes through the Energy Recovery Wheel.


Temperature °F Real 0.0–99.0°F NA




Full Reference

MTII RTUC #########.Applications.McQ.RT.Cooling.nviExh Temp AV.Present Value

Energy Recovery Hours Keypad Menu Path Setup/Service\Operating Hours\Erecovery=

This read-only property indicates the hours that the optional energy recovery system has been in operation. This value

accumulates to 65,535 hours before rolling over.






ED15060-12 49

Full Reference

MTII RTUC #########.Applications.McQ.RT.Energy Rec Op Time.Present Value

Energy Recovery Supply Temperature Keypad Menu Path No Keypad Equivalent

This read only property indicates the current temperature from the unit supply air temperature sensor. This is the

temperature of ventilation air after it passes through the Energy Recovery Wheel.






Full Reference

MTII RTUC #########.Applications.McQ.RT.Cooling.nviSupply Temp AV.Present Value

Entering Fan Temperature Keypad Menu Path System Summary\Temperatures\Ent Fan=

This read-only attribute indicates the current value of the unit entering fan air temperature sensor. This sensor is standard on

all units equipped with gas or electric heat.


Temperature °F Real 50.0°–140°F NA




Full Reference

MTII RTUC #########.Applications.McQ.RT.Ent Fan Temperature.Present Value

Face and Bypass Control Keypad Menu Path Setup/Service\Heating Setup\F&BP Ctrl=

This read/write property determines the type of heating valve control to be used on units equipped with face and bypass

heating.





Application 236 615 F BP Method 63453

Full Reference

MTII RTUC #########.Applications.McQ.RT.Heating.F BP Method

Enumeration

0 = Open Valve

1 = Mod Valve

50

50 ED15060-13

Face and Bypass Changeover Temperature Setpoint Keypad Menu Path Setup/Service\Heating Setup\F&BP Chgovr=

This read/write property sets the temperature that drives the heating valve fully open when the Face and Bypass Control

(See on page 49) property is set to ModValve.





Application 236 615 F BP Changeover 63451

Full Reference

MTII RTUC #########.Applications.McQ.RT.Heating.F BP Changeover

Fan Operating Hours Keypad Menu Path Setup/Service\Operating Hours\Fan=

This read-only attribute indicates hours of unit fans operation. The value accumulates to 65,535 hours before rolling over.






Full Reference

MTII RTUC #########.Applications.McQ.RT.Fan Op Time.Present Value

Fan Operation Output Keypad Menu Path Airflow\Airflow Summary\Fan Operation=

This read-only attribute indicates the on/off status of the Fan Operation Output (MCB-BO3).





Binary Value 4 250 Present Value 85

Full Reference

MTII RTUC #########.Applications.McQ.RT.Start Stop Control.Fan Op.Present Value

Enumeration

0 = Off

1 = On

Heating Capacity Keypad Menu Path System Summary\System\Htg Capacity= Or Temperatures\Zone Heating\Htg Capacity= Or Temperature\Discharge Heating\Htg Capacity=

This read-only attribute indicates the current percentage of unit maximum heating capacity.




Status (See page 72), Cooling Capacity (See page 31), Discharge Fan Status (See page 40), Discharge Fan Capacity (See

page 40), Outdoor Air Damper Position (See page 64), and In Alarm (See page 54).

ED15060-12 51


Heating Capacity Percent BACnet: Real

LonWorks: Structure

0.0–100.0% NA




Full Reference

MTII RTUC #########.Applications.McQ.RT.Heating.Htg Capacity AV.Present Value

LonWorks LonWorks Name Profile SNVT Type SNVT Index

nvoUnitStatus_heat_output_primary DAC, SCC SNVT_hvac_status 112

Heating Control Status Keypad Menu Path System Summary\System\Htg Status=

This read-only attribute indicates whether heating is currently allowed. If heating is disabled, the reason is indicated.






Full Reference

MTII RTUC #########.Applications.McQ.RT.Heating.Htg Status MAV.Present Value

Enumeration

0 = Ht. Ena

1 = Off Amb

2 = Off Alarm

3 = Off None

4 = N/A

5 = Off Sw

6 = Off Net

7 = Off Man

Heating Operating Hours Keypad Menu Path Setup/Service\Operating Hours\Heating=

This read-only property indicates the hours of unit heating operation. This value accumulates to 65,535 hours before rolling

over. This value can be reset or adjusted.






Full Reference

MTII RTUC #########.Applications.McQ.RT.Heating Op Time.Present Value

52

52 ED15060-13

Heating Reset Enable State Keypad Menu Path No Keypad Equivalent

This read/write configuration property enables or disables the discharge air temperature heating reset control for the


Note: When this property is enabled, the type of heating discharge temperature reset is determined by the Heating Reset

Enable Value.


State NA BACnet: Real

LONWORKS: Structure

Enumerated NA



Application 236 615 Heating Stpt Status 938

Full Reference

MTII RTUC #########.Applications.McQ.RT.Heating.Heating Stpt Status

Enumeration

0 = Disabled

1 = Enabled


nciHeatResetEn_state DAC SCPTheatingResetEn 212 SNVT_switch 95

Structure

typedef struct {



1=Enabled

} SNVT_switch;

Heating Reset Enable Value Keypad Menu Path Temperatures/Discharge Heating/Htg Reset=

This read/write configuration property enables or disables the discharge air temperature heating reset control for the


Note: Selecting True does not change the type of Heating Reset. Selecting False disables Heating Reset.

Note: Heating Reset Enable State must be enabled or this property has no effect.





Application 236 615 Effective Value 50043

Full Reference

MTII RTUC #########.Applications.McQ.RT.Heating.Effective Value

ED15060-12 53

Enumeration

0 = None

1 = Space

2 = Return

3 = OAT

4 = Ext mA

5 = Ext V


nciHeatResetEn_value DAC SCPTheatingResetEn 212 SNVT_switch 95

Structure

typedef struct {



1=Enabled

} SNVT_switch;



0 None

1 Space

2 Return

3 OAT

4 Ext Ma

5 Ext V

6 Airflow


BACnet LonWorks

0 None None

1 Space Space

2 Return Return

3 OAT OAT

4 Ext Ma Ext Ma

5 Ext V Ext V

6 Airflow Airflow

Holidays Keypad Menu Path Schedules\Holiday Schedule\Hol?=

This read/write property specifies the dates for holidays. You can list the holidays here and then specify this property in the

Schedule object for exceptions to the weekly schedule.


Holidays Dates BACnet Calendar Entry NA NA



Calendar 6 1465 Date List 23

Full Reference

MTII RTUC #########.Schedule.Calendar.Date List

54

54 ED15060-13

HVAC Unit Type Identifier Keypad Menu Path No Keypad Equivalent

This read/write configuration property indicates the primary application and equipment type for the space comfort controller

device. For other SCC object types the application and equipment type can be determined directly from the object type and

corresponding device class within the standard program id. The HVAC Unit-Type configuration property can be polled by a

tool or an operator interface device, to help the user identify the type of equipment. The HVAC Unit-Type is set at the time

of manufacture.


HVAC Unit Type NA Real Enumerated NA

BACnet No BACnet equivalent.

LonWorks LonWorks Name Profile SNVT Type SNVT Index SCPT Reference SCPT Index

nciHvacType SCC SNVT_hvac_type 145 SCPThvacType 169

Enumeration Definitions (SNVT_HVT.H)


0 HVT_GENERIC Generic

1 HVT_FAN_COIL Fan Coil

2 HVT_VAV Variable Air Volume Terminal

3 HVT_HEAT_PUMP Heat Pump

4 HVT_ROOFTOP Rooftop Unit

5 HVT_UNIT_VENT Unit Ventilator

6 HVT_CHILL_CEIL Chilled Ceiling

7 HVT_RADIATOR Radiator

8 HVT_AHU Air Handling Unit

9 HVT_SELF_CONT Self-Contained Unit

0xFF HVT_NUL Invalid value

In Alarm Keypad Menu Path No Keypad Equivalent

This read-only attribute indicates whether the unit is currently in alarm.









BACnet See Alarms on page 78.


nvoUnitStatus_in_alarm DAC, SCC SNVT_hvac_status 112

ED15060-12 55

Local Bypass Time Keypad Menu Path Setup/Service\Timer Settings\Bypass=

This read/write configuration property sets the maximum amount of time that the controller can be in the Bypass

(occupancy) mode following a single Bypass request from either a local (hardwired) bypass switch or nviOccManCmd

(Occupancy Mode) (See page 59.) Additional Bypass requests can restart the timer.


Time Minutes Real 0–300 min 120 minutes (2 hours).



Application 236 1440 Bypass Time 50302

Full Reference

MTII RTUC #########.Applications.McQ.RT.Occupancy.Bypass Time


nciBypassTime DAC, SCC SCPTbypassTime 34 SNVT_time_min 123

Maximum Discharge Air Cooling Setpoint Keypad Menu Path Temperatures\Discharge Cooling\Max Clg Spt

This read/write configuration property defines the maximum discharge air cooling setpoint for the controller. It is used to

limit the discharge air cooling setpoint determined by the discharge air temperature reset function.







LONWORKS: °C

Real BACnet: 0.0–99.0 °F

LONWORKS: -17.7°–37.2°C

NA




Full Reference

MTII RTUC #########.Applications.McQ.RT.Cooling.Max DAT Clg Spt AV.Present Value


nciMaxDAClSP DAC, SCC SCPTmaxDAClSP Not Available SNVT_temp_p 105

Maximum Discharge Air Heating Setpoint Keypad Menu Path Temperatures\Discharge Heating\Max Htg Spt

This read/write configuration property defines the maximum discharge air heating setpoint for the controller. It is used to

limit the discharge air heating setpoint determined by the discharge air temperature reset function.







LONWORKS: °C

Real BACnet: 40.0°–140.0 °F

LONWORKS: 4.4°–60°C

NA

56

56 ED15060-13




Full Reference

MTII RTUC #########.Applications.McQ.RT.Heating.Max DAT Htg Spt AV.Present Value


nciMaxDAHtSP DAC, SCC SCPTmaxDAHtSP Not Available SNVT_temp_p 105

Maximum Purge Time Keypad Menu Path Temperatures\OA Damper\Max Purge=

This read/write attribute sets the maximum time prior to occupancy that the units purge. This feature functions only when an

optional space (or zone) temperature sensor is installed and when a unit internal schedule is being used.


Time Minutes Real 0-240 min NA



Application 236 425 Max Purge 63645

Full Reference

MTII RTUC #########.Applications.McQ.RT.Damper Ctrl.Max Purge

Minimum Discharge Air Cooling Setpoint Keypad Menu Path Temperatures\Discharge Cooling\Min Clg Spt=

This read/write configuration property defines the minimum discharge air cooling setpoint for the controller. It is used to

limit the discharge air cooling setpoint determined by the discharge air temperature reset function.







LONWORKS: °C


LONWORKS: 4.4°–37.7°C

NA




Full Reference

MTII RTUC #########.Applications.McQ.RT.Cooling.Min DAT Clg Spt AV.Present Value


nciMinDAClSP DAC, SCC SCPTminDAClSP Not Available SNVT_temp_p 105

Minimum Discharge Air Heating Setpoint Keypad Menu Path Temperatures\Discharge Heating\Min Htg Spt=

This read/write configuration property defines the minimum discharge air heating setpoint. It limits the discharge air heating

setpoint determined by the discharge air temperature reset function.

ED15060-12 57







LONWORKS: °C


LONWORKS: 4.4°–60,0°C

NA




Full Reference

MTII RTUC #########.Applications.McQ.RT.Heating.Min DAT Htg Spt AV.Present Value


nciMinDAHtSP DAC, SCC SCPTminDAHtSP Not Available SNVT_temp_p 105

Minimum Discharge Air Temperature Control Flag Keypad Menu Path Temperatures\Discharge Heating\Min DAT Ctrl=

This read/write property activates or deactivates the low discharge temperature limit available on units equipped with

modulating or multistage heat. The low discharge temperature limit is not available on units with single stage heat.





Application 236 320 Min DAT Ctrl 63652

Full Reference

MTII RTUC #########.Applications.McQ.RT.Unit State.Min DAT Ctrl

Enumeration

0 = No

1 = Yes

Minimum Discharge Air Temperature Limit Keypad Menu Path Temperatures\Discharge Heating\MinDAT Limit=

This read/write property sets the low discharge temperature limit available on space comfort control units equipped with

modulating or multistage heat.

On discharge air control units, the Effective Cooling Discharge Setpoint serves as the low discharge temperature limit.










Full Reference

MTII RTUC #########.Applications.McQ.RT.Unit State.Min DAT Limit AV.Present Value

Minimum Outdoor Airflow Setpoint Keypad Menu Path Temperatures\OA Damper\MinOA Flow=

58

58 ED15060-13

This read/write property sets the airflow (cfm) setpoint when the unit is equipped with the optional Design Flow Outdoor

Air control. When Design Flow is set to Yes, the

Effective Minimum Outdoor Damper Position Setpoint (See page 46) is reset to maintain the Outdoor Air Flow (See page

65) at this setting.






Air flow BACnet: cubit feet per minute

LONWORKS: liters/sec

Real BACnet: 100 – 50000 CFM

LONWORKS: 0–65,534 (1 liter/sec).

NA




Full Reference

MTII RTUC #########.Applications.McQ.RT.Damper Ctrl.Min OA Airflow AV.Present Value


nviMinOAFlowSP DAC, SCC SNVT_flow 15

Minimum Send Time Keypad Menu Path No Keypad Equivalent

This read/write configuration property defines the minimum period of time between automatic network variable output

transmissions.


Time Seconds Fixed Point Scalar - unsigned long 0.0–6553.4 sec (0.1 sec). NA


LONWORKS LONWORKS Name Profile SNVT Type SNVT Index SCPT Reference SCPT Index

nciMinOutTm DAC, SCC SNVT_time_sec 107 SCPTminSendTime 52

OA Ambient Keypad Menu Path Temperatures\OA Damper\OA Ambient=

This read-only attribute indicates whether the outdoor air is suitable for free cooling based on outdoor air temperature or

enthalpy. If it is, Low (0) is displayed. If not, High (1) is displayed.


Condition of Outside Air NA BACnet: Real

LONWORKS: Structure

Enumerated NA



Application 236 52 OA Ambient 63770

Full Reference

MTII RTUC #########.Applications.McQ.RT.OA Ambient

Enumeration

0 = Low

1 = High

ED15060-12 59


nvoEconEnabled_state DAC, SCC SNVT_switch 95

Structure

typedef struct {

unsigned value; No Used

signed state; 0=Low

1=High

} SNVT_switch;

Occupancy Keypad Menu Path System Summary\Occupancy\Occupancy=

This read-only property indicates whether the unit is currently in an occupied, unoccupied, or bypass mode of operation.


Occupancy NA Real Enumerated NA




Full Reference

MTII RTUC #########.Applications.McQ.RT.Occupancy.Occupancy PV MAV.Present Value

Enumeration

0 = Occ

1 = Unocc

2 = Bypass


nvoEffectOccup DAC, SCC SNVT_occupancy 109



0 OC_OCCUPIED Area is occupied

1 OC_UNOCCUPIED Area is unoccupied

2 OC_BYPASS Area is temporarily occupied for the bypass period

3 OC_STANDBY Area is temporarily unoccupied

0xFF OC_NUL Value not available


BACnet Occupancy Lon SNVT_occupancy

0 Occ 0 OC_OCCUPIED

1 Unocc 1 OC_UNOCCUPIED

2 Bypass 2 OC_BYPASS

0 Occ 3 OC_STANDBY

3 Auto 0xFF OC_NUL

Occupancy Mode Keypad Menu Path System Summary\Occupancy\Occ Mode=

This read/write property sets the unit into a different occupancy mode. It is typically sent by a wall-mounted occupant-

interface module or a supervisory node, to manually control occupancy modes, or to override the scheduled occupancy.

If a local Bypass Input is present, it can be used with this network variable input. The local input, when active, forces a

Bypass request (equivalent to OC_BYPASS), (determined by the configuration property nciBypassTime [Local Bypass

60

60 ED15060-13

Time (See on page 55)]). When nviOccManCmd indicates OC_BYPASS, the Local Bypass Time is also used. Whenever an

update of nviOccManCmd is received indicating OC_BYPASS, the bypass timer is restarted. This network variable input

should never be bound to a network variable that uses a Send Heartbeat function.

This input is used with nviOccSchedule to determine the effective occupancy mode. Refer to Occupancy (nvoEffectOccup)

for more information.






Full Reference

MTII RTUC #########.Applications.McQ.RT. Occupancy.Occ Man Cmd MAV.Present Value

Enumeration

0 = Occ

1 = Unocc

2 = Bypass

3 = Auto


nviOccManCmd DAC, SCC SNVT_occupancy 109









BACnet nviOccManCmd Lon SNVT_occupancy

0 Occ 0 OC_OCCUPIED


2 Bypass 2 OC_BYPASS

0 Occ 3 OC_STANDBY

3 Auto 0xFF OC_NUL

ED15060-12 61

Occupancy Scheduler Input Keypad Menu Path No Keypad Equivalent

This read/write property commands the Occupancy function of the controller when Occupancy Mode (See page 59) is set to

Auto. It is typically sent by a scheduler or a supervisory node. SNVT_tod_event is a structure containing three parts. The

first part, current_state, is required for this network variable input. The additional parts, next_state and time_to_next_state,

are optional. They can be used for control strategies that provide improved transitions between states. A scheduler node

should send OC_NUL and 0, respectively, if it does not use these functions. The controller node ignores these values if the

functions are not supported by the controller. The unit controller does not support these functions.

This input is used in conjunction with nviOccManCmd (Occupancy Mode) (See page 59) to determine the effective

occupancy mode. Refer to nvoEffectOccup (Occupancy) for more information.






Full Reference

MTII RTUC #########.Applications.McQ.RT.Occupancy.Occupancy.Present Value

Enumeration

0 = Unoccupied

1 = Occupied


nviOccSchedule_current_state DAC, SCC SNVT_tod_event 128

Structure

typedef struct {

occup_t current_state; See Below

occup_t next_state; Not Used

unsigned long time_to_next_state; Not Used

}SNVT_tod_event

Field Definitions

Field Data Point Reference Units Valid Range Notes

current_state Occupancy Scheduler Input occup_t current scheduled occupancy state

next_state Occupancy Scheduler Next occup_t next scheduled occupancy state

time_to_next_state Occupancy Scheduler Time minutes 0 to 65,535

Enumeration Definitions (occup_t) Value Identifier Notes






Enumeration Correspondence BACnet LONWORKS

1 Occ 0 OC_OCCUPIED


2 OC_BYPASS

1 Occ 3 OC_STANDBY

3 0xFF OC_NUL

62

62 ED15060-13

Occupancy Source Keypad Menu Path System Summary\Occupancy\Occ Src=

This read-only property indicates the input source or function that is responsible for setting the Occupancy (See on page 59)

attribute to Occupied.


Schedule Source NA Real Enumerated NA




Full Reference

MTII RTUC #########.Applications.McQ.RT.Occupancy.Occupancy Status MAV.Present Value

Enumeration

0 = None

1 = Int Sched

2 = Net Sched

3 = Occ Mode

4 = Remote Sw

5 = N/A

Occupied Cooling Dead Band Keypad Menu Path Temperatures\Zone Cooling\Clg Deadband=

This read/write property sets a dead band around the

Effective Cooling Enable Setpoint (See page 44.)





Application 236 790 Zone Clg Deadband 63995

Full Reference

MTII RTUC #########.Applications.McQ.RT.Cooling.Zone Clg Deadband

Occupied Cooling Setpoint Keypad Menu Path Temperatures\Zone Cooling\Occ Clg Spt=

This read/write configuration property sets the

Effective Cooling Enable Setpoint (See page 44.) The Effective Cooling Enable Setpoint is set to this value when it is not

being set by another function.





The BACnet property only applies to the subject data point, but the LONWORKS variable is a structure that covers three

other data points: Unoccupied Cooling Setpoint (Seepage 75), Occupied Heating Setpoint (See page 63), and Unoccupied

Heating Setpoint (See page 76).



LONWORKS:°C


LONWORKS: -17.7°–37.2°C

NA




ED15060-12 63

Full Reference

MTII RTUC #########.Applications.McQ.RT.Cooling.Occ Clg Spt AV.Present Value


nciSetpoints_Occuppied Cool DAC, SCC SCPTsetPnts 60 SNVT_temp_setpt 106

Structure

typedef struct {

signed long occupied_cool;

signed long standby_cool; Not Used

signed long unoccupied_cool;

signed long occupied_heat;

signed long standby_heat; Not Used

signed long unoccupied_heat;

} SNVT_temp_setpt;

Occupied Heating Dead Band Keypad Menu Path Temperatures\Zone Heating\Htg Deadband=

This read/write property sets the temperature dead band around the Effective Heating Discharge Setpoint (See on page 45.)





Application 236 615 Zone Htg Deadband 63996

Full Reference

MTII RTUC #########.Applications.McQ.RT.Heating.Zone Htg Deadband

Occupied Heating Setpoint Keypad Menu Path Temperatures\Zone Heating\Occ Htg Spt=

This read/write configuration property sets the Occupied Heating Setpoint (See page 45.) The Effective Heating Enable

Setpoint is set to this value when it nor being set by any other function.






other data points: Occupied Cooling Setpoint (See page 62), Unoccupied Cooling Setpoint (See page 75), and Unoccupied




LONWORKS: °C


LONWORKS: -17.7°–37.2°C

NA




Full Reference

MTII RTUC #########.Applications.McQ.RT.Heating.Occ Htg Spt AV.Present Value


nciSetpoints_occuppied heat DAC, SCC SCPTsetPnts 60 SNVT_temp_setpt 106

64

64 ED15060-13

Structure

typedef struct {







} SNVT_temp_setpt;

Outdoor Air Damper Minimum Position Keypad Menu Path Temperatures\OA Damper\MinOA Pos=

This read/write configuration property sets the

Effective Minimum Outdoor Damper Position Setpoint (See page 46) setpoint for the unit. The Effective Minimum Outdoor

Air Damper Position Setpoint is set to this value when it is not being set by any other function.






Position Percent Real 0–100% NA




Full Reference

MTII RTUC #########.Applications.McQ.RT.Damper Ctrl.OAD Min Pos Reset AV.Present Value


nviOAMinPos DAC, SCC SCPTminRnge 23 SNVT_lev_percent 81

Outdoor Air Damper Position Keypad Menu Path Temperatures\OA Damper\OA Damper Pos=

This read-only attribute indicates the current outdoor air damper position.





Heating Capacity (See page 50), Discharge Fan Status (See page 40), Discharge Fan Capacity (See page 40), and In Alarm

(See page 54).


Percent NA BACnet: Real

LONWORKS: Structure

0-100% NA




Full Reference

MTII RTUC #########.Applications.McQ.RT.Damper Ctrl.OA Damper Pos.Present Value

ED15060-12 65


nvoUnitStatus_econ_output DAC, SCC SNVT_hvac_status 112

Outdoor Air Flow Keypad Menu Path Temperatures\OA Damper\OA Flow=

This read-only attribute indicates the current outdoor airflow based on an optional Outdoor airflow sensor input used when

the unit is equipped with the DesignFlow Outdoor control feature.


Air Flow BACnet: cubit feet per minute

LONWORKS: liters per second

Real BACnet: 0-70000 CFM

LONWORKS: 0–65,534 liters/sec (1 liter/sec)

NA




Full Reference

MTII RTUC #########.Applications.McQ.RT.Damper Ctrl.Airflow Measurmnt AV.Present Value


nvoOAFlow DAC, SCC SNVT_flow 15

Outdoor Air Temperature Keypad Menu Path System Summary\Temperatures\OA Temp= Or Temperatures\OA Damper\OA Temp=

This read-only attribute indicates the current value of a unit-mounted outdoor air temperature sensor. If you are using one

temperature sensor to determine the outdoor air temperature for the entire network, you can write the temperature to this

property if you set the Out of Service property to True.


Temperature BACnet: F

LONWORKS: °C

Real BACnet: 50°–140°F


NA




Full Reference

MTII RTUC #########.Applications.McQ.RT.OA Temperature.Present Value


nviOutdoorTemp DAC, SCC SNVT_temp_p 105

nvoOutdoorTemp DAC, SCC SNVT_temp_p 105

66

66 ED15060-13

Receive Heartbeat Keypad Menu Path No Keypad Equivalent

This read/write configuration property defines the maximum time that elapses after the last update to a specified network

variable input before the unit starts to use its default values.





nciRcvHrtBt DAC, SCC SNVT_time_sec 107 SCPTmaxRcvTime 48

Relative Humidity Keypad Menu Path Humidity\Dehumidification\Rel Humidity=

The BACnet propery is a read-only property indicates the current reading of the optional relative humidity sensor.

LONWORKS includes both a network input variable to set the data point and a network output variable to interrogate the data

point.


Relative Humidity Percent Real 10%–110% NA




Full Reference

MTII RTUC #########.Applications.McQ.RT.Cooling.Rel Humidity.Present Value


nviSpaceRH SCC SNVT_lev_percent 81

nvoSpaceRH SCC SNVT_lev_percent 81

Relative Humidity Control Type Keypad Menu Path Humidity\Dehumidification\Dehum Mehtod=

This read/write property turns dehumidification on or off and selects whether dehumidification is based on relative humidity

or dew point.






Control Type NA Real Enumerated NA




Full Reference

MTII RTUC #########.Applications.McQ.RT.Cooling.Dehum Method MAV.Present Value

Enumeration

0 = None

1 = RelHum

2 = DewPnt

ED15060-12 67

Relative Humidity Dead Band Keypad Menu Path Humidity\Dehumidification\RH Db=

This read/write property sets a dead band around the Relative Humidity Setpoint.


Relative Humidity Percent Real 0–10% NA



Application 236 790 RH Deadband 63872

Full Reference

MTII RTUC #########.Applications.McQ.RT.Cooling.RH Deadband

Relative Humidity Setpoint Keypad Menu Path Humidity\Dehumidification\RH Setpoint=

This read/write property sets the relative humidity setpoint used when Dehumidify Method is set to Relative Humidity.






Relative Humidity Percent Real 0-99% NA




Full Reference

MTII RTUC #########.Applications.McQ.RT.Cooling.RH Setpoint AV.Present Value


nviSpaceDehumSP SCC SNVT_lev_percent 81

Remote Discharge Fan Capacity Control Flag Keypad Menu Path Setup/Service\Unit Configuration\DF CapCtrl=

This read/write property selects the discharge fan airflow control used on a VAV unit. If this parameter is set to Duct Static

Pressure, the discharge fan airflow maintains the duct static pressure at the duct static pressure set point. If this parameter is

set to Position, the discharge fan airflow is controlled to an inlet vane position or VFD speed set via the Remote Discharge

Fan Capacity Setpoint (See page 68.)










Full Reference

MTII RTUC #########.Applications.McQ.RT.DF Cap Ctrl.DF Cap Ctrl MAV.Present Value

Enumeration

0 = Duct Press

1 = Position

68

68 ED15060-13

Remote Discharge Fan Capacity Setpoint Keypad Menu Path Setup/Service\Unit Configuration\Remote DF Cap=

This read/write property sets the discharge air vane position or VFD speed when the Discharge Fan Capacity Control Flag is

set to Position.






Fan Capacity Percent Real 0–100 % NA




Full Reference

MTII RTUC #########.Applications.McQ.RT.DF Cap Ctrl.Remote DF Pos AV.Present Value


nviSupFanCap DAC SNVT_lev_percent 81

Remote Return Fan Capacity Control Flag Keypad Menu Path Setup/Service\Unit Configuration\RF/EF Ctrl=

This read/write property selects the return or exhaust fan airflow control. If the unit is equipped with return fan inlet vanes

or a VFD and this property is set to Tracking, the return fan airflow is controlled based on an adjustable tracking

relationship between the discharge fan and return fan airflow. If this parameter is set to Building, the return or exhaust fan

airflow is controlled independently of the discharge fan airflow to maintain the building static pressure at a building static

pressure set point. If this parameter is set to Position, the return or exhaust fan airflow is controlled to an inlet vane position

or VFD speed set point set via the Remote Return Fan Capacity Setpoint (See page 71.)










Full Reference

MTII RTUC #########.Applications.McQ.RT.RF Cap Ctrl.RF Cap Ctrl MAV.Present Value

Enumeration

0 = None

1 = Tracking

2 = Bldg Pres

3 = Position

ED15060-12 69

Remote Return Fan Capacity Setpoint Keypad Menu Path Setup/Service\Unit Configuration\Rem RF/EF Cap= Or Setup/Service\Fan Balance\Rem RF/EF Cap=

This read/write property sets the return/exhaust air vane position or VFD speed when

Remote Return Fan Capacity Control Flag (See on page 67) property is set to Position. It is also used when the Fan Balance

property is set to On to manually position the return fan vanes of VFD during the fan balance procedure.






Fan Capacity Percent Real 0–100% NA




Full Reference

MTII RTUC #########.Applications.McQ.RT.RF Cap Ctrl.Remote RF Pos AV.Present Value

Return Air Temperature Keypad Menu Path System Summary\Temperatures\Return Air=

The BACnet property is a read-only attribute that indicates the current reading from the unit return air temperature sensor.

LONWORKS includes a network input variable to set the return air temperature and a network output variable to interrogate

the sensor.



LONWORKS: °C


LONWORKS: -12.2°–79.4°C

NA




Full Reference

MTII RTUC #########.Applications.McQ.RT.RA Temperature.Present Value


nviRATemp DAC, SCC SNVT_temp_p 105

nvoRATemp DAC, SCC SNVT_temp_p 105

Return Fan Capacity Keypad Menu Path Airflow\Duct Pressure\RF/EF Fan Cap= Or Airflow\Bldg Pressure\RF/EF Fan Cap=

This read-only attribute indicates the current return fan or exhaust fan capacity.






Fan Capacity Percent of discharge fan capacity

or VFD maximum speed

BACnet: Real

LONWORKS: Structure

0-100% NA

70

70 ED15060-13




Full Reference

MTII RTUC #########.Applications.McQ.RT.RF Cap Ctrl.RF Cap Ctrl PV AV.Present Value


nvoRetFanStatus_value DAC, SCC SNVT_switch 95

Structure

typedef struct {

unsigned value; 0–100%

signed state; 0=Off

1=On

} SNVT_switch;

Return Fan Status Keypad Menu Path Airflow\Airflow Summary\RF/EF=

This read-only property indicates whether the controller is commanding the return or exhaust fan on.


Fan Status NA BACnet: Real

LONWORKS: Structure

Enumerated NA




Full Reference

MTII RTUC #########.Applications.McQ.RT.Start Stop Control.RF On Off.Present Value

Enumeration

0 = Off

1 = On


nvoRetFanStatus_state DAC, SCC SNVT_switch 95

Structure

typedef struct {

unsigned value; 0–100%

signed state; 0=Off

1=On

} SNVT_switch;

Send Heartbeat Keypad Menu Path No Keypad Equivalent

This read/write configuration property defines maximum period of time that expires before the specified network variable

outputs is automatically updated.




ED15060-12 71


nciSndHrtBt DAC, SCC SNVT_time_sec 107 SCPTmaxSendTime 49

Space Setpoint Type Keypad Menu Path Setup/Service\Zone Temp Setup\Spt Source=

This read/write property determines the source for setting the Effective Cooling Enable Setpoint and point Effective Heating

Enable Setpoint. When this property is set to Network, the Effective Cooling Enable Setpoint and Effective Heating Enable

Setpoint are set to the Occupied Cooling Setpoint (See on page 62) and Occupied Heating Setpoint (See on page 63)

respectively from BACnet networks. For LonWorks networks see

Effective Setpoint Output on page 46. When this property is set to Tstat, the Effective Cooling Enable Setpoint and

Effective Heating Enable Setpoint are set from the remotely mounted space temperature sensor.





Note: The keypad/display returns Tstat or Keypad






Full Reference

MTII RTUC #########.Applications.McQ.RT.Spt Source MAV. Present Value

Enumeration

0 = Tstat

1 = Network

Space Temperature Keypad Menu Path System Summary\Temperatures\Space Temp=

This read-only attribute indicates the current space or zone temperature from the optional space air temperature sensor.

Note: If the optional space temperature sensor is not installed, the Space Sensor attribute in the Unit Configuration menu

of the keypad/display should be set to No to disable the alarm function associated with an open circuit at the space

temperature sensor input.



LONWORKS: °C


LONWORKS: -12.2°–35°

NA




Full Reference

MTII RTUC #########.Applications.McQ.RT.Space Temperature.Present Value


nviSpaceTemp DAC, SCC SNVT_temp_p 105

nvoSpaceTemp DAC, SCC SNVT_temp_p 105

72

72 ED15060-13

Temperature Setpoint Input Keypad Menu Path No Keypad Equivalent

This read/write property is only used in LONWORKS networks. It determines the

Effective Setpoint Output (See page 46.) If the value is valid, the Effective Setpoint Output is determined by this value (See

page 46.) If the value is not valid, the Effective Setpoint Output does not depend on this value (See page 46.)

Note: On space comfort control units the Space Setpoint Type must not be set to Tstat, otherwise the space setpoint

adjustment on the optional space sensor overrides the Temperature Setpoint Input (nviSetpoint).

Note: The unoccupied setpoints are not changed.


Temperature °C Fixed Point Scalar - signed long 4.4°–37.7°C NA



nviSetpoint DAC, SCC SNVT_temp_p 105

Time Keypad Menu Path Setup/Service\Time/Date\Time=

This read/write property sets the current time of the form hours, minutes, seconds, and hundredths of a second. See

ANSI/ASHRAE 135-2001 for a definition of the data type.


Time hours, minutes, seconds,

and hundredths of a second

BACnet time data types NA NA



Device 8 10 Local Time 57

Full Reference

MTII RTUC #########.Local Time

Unit Status Keypad Menu Path System Summary\System\UnitStatus=

This read-only property indicates the current unit operating state.






Unit Status NA BACnet: Real

LONWORKS: Structures

Enumerated NA

ED15060-12 73




Full Reference

MTII RTUC #########.Applications.McQ.RT.Unit State.Unit State PV MAV.Present Value

Enumeration

0 = Off Unoc

1 = Off Net

2 = Off Sw

3 = Off Alm

4 = Calib

5 = Startup

6 = Recirc

7 = Fan Only

8 = Econo

9 = Cooling

10 = MWU

11 = Heating

12 = Min DAT

13 = UnocEcon

14 = UnocFanO

15 = UnocDAT

16 = UnocClg

17 = UnocHtg

18 = Balance

19 = Off Man

20 = Man Ctrl


nvoUnitStatus_modeMapped DAC, SCC SNVT_hvac_status 112

Measurement HVAC Status

Type Category Structure

Type Size 12 bytes

Structure

typedef struct {

hvac_t mode;

signed long heat_output_primary;

signed long heat_output_secondary;

signed long cool_output;

signed long econ_output;

signed long fan_output;

unsigned in_alarm;

} SNVT_hvac_status;

74

74 ED15060-13

Field Definitions Field Data Point Reference Valid Range Notes

mode See below Enumerated compatible with

SNVT_hvac_mode

heat_output_primary Heating Capacity -163.83 .. +163.83%

(percentage of full scale)

primary heat output

heat_output_secondary Not Applicable -163.83 .. +163.83%


secondary heat output

cool_output Cooling Capacity -163.83 .. +163.83%


cooling output

econ_output Out Door Air Damper Position -163.83 .. +163.83%


economizer output

fan_output Discharge Fan Capacity -163.83 .. +163.83%


fan output

in_alarm In Alarm 0 = No Alarm

1-99 = Warning

100-199 = Problem

200-255 = Fault

Any non-zero value means unit is

in alarm*

* The value assigned to each alarm is the same for both BACnet and LONMARK applications. For these enumerations, refer

to tables labeled “Alarm, Faults: Individual Notification”, “Alarm, Problems: Individual Notification”, and “Alarm,

Warnings: Individual Notification” found in the “Alarms” section of this document.



0 HVAC_AUTO Controller automatically changes between application modes

1 HVAC_HEAT Heating only

2 HVAC_MRNG_WRMUP Application-specific morning warm-up

3 HVAC_COOL Cooling only

4 HVAC_NIGHT_PURGE Application-specific night purge

5 HVAC_PRE_COOL Application-specific pre-cool

6 HVAC_OFF Controller not controlling outputs

7 HVAC_TEST Equipment being tested

8 HVAC_EMERG_HEAT Emergency heat mode (heat pump)

9 HVAC_FAN_ONLY Air not conditioned, fan turned on

10 HVAC_FREE_COOL Cooling with compressor not running

11 HVAC_ICE Ice-making mode

0xFF HVAC_NUL Value not available

ED15060-12 75


BACnet Unit Status Lon SNVT_hvac_mode

0 Off Unocc 6 HVAC_OFF

1 Off Net 6 HVAC_OFF

2 Of Sw 6 HVAC_OFF

3 Off Alrm 6 HVAC_OFF

4 Calib 7 HVAC_TEST

5 Startp 6 HVAC_OFF

6 Recirc 9 HVAC_FAN_ONLY

7 Fan Only 9 HVAC_FAN_ONLY

8 Econo 10 HVAC_FREE_COOL

9 Cooling 3 HVAC_COOL

10 MWU 2 HVAC_MRNG_WRMUP

11 Heating 1 HVAC_HEAT

12 Min DAT 9 HVAC_FAN_ONLY

13 UnocEcon 10 HVAC_FREE_COOL

14 UnocFanO 9 HVAC_FAN_ONLY

15 UnocDAT 9 HVAC_FAN_ONLY

16 UnocClg 3 HVAC_COOL

17 UnocHtg 1 HVAC_HEAT

18 Balance 7 HVAC_TEST

10 Off Man 6 HVAC_OFF

20 Man Ctrl 7 HVAC_TEST

Unoccupied Cooling Differential Keypad Menu Path Temperatures\Zone Cooling\UnoccClgDiff=

This read/write property sets a differential above the Unoccupied Cooling Setpoint (See below.) Once activated, unoccupied

cooling operation is terminated when the Space Temperature (See page 71.) falls below the Unoccupied Cooling Setpoint by

more than this differential.


Temperature °F Real 1.0°–10.0 °F NA



Application 236 320 Night Setup Diff 63709

Full Reference

MTII RTUC #########.Applications.McQ.RT.Unit State.Night Setup Diff

Unoccupied Cooling Setpoint Keypad Menu Path Temperatures\Zone Cooling\UnoccClg Spt=

This read/write configuration property sets the temperature above which the unit starts and provides cooling (night setup)

during unoccupied periods. An optional space temperature sensor is required for unoccupied cooling operation.






other data points: Occupied Cooling Setpoint (See page 62), Occupied Heating Setpoint (See page 63), and Unoccupied


76

76 ED15060-13



LONWORKS: °C


LONWORKS: -17.7°–37.2°C

NA




Full Reference

MTII RTUC #########.Applications.McQ.RT.Unit State.Unocc Clg Spt AV.Present Value


nciSetpoints_unoccupied_cool DAC, SCC SCPTsetPnts 60 SNVT_temp_setpt 106

Structure

typedef struct {







} SNVT_temp_setpt;

Unoccupied Heating Differential Keypad Menu Path Temperatures\Zone Heating\UnoccHtgDiff=

This read/write property sets a differential above the Unoccupied Heating Setpoint. (See below.) Once activated,

unoccupied heating operation is terminated when the Send Heartbeat (See on page 70) rises above the Unoccupied Heating

Setpoint by more than this differential.


Temperature °F Real 1.0°–10.0 °F NA



Application 236 320 Night Setback Diff 63708

Full Reference

MTII RTUC #########.Applications.McQ.RT.Unit State.Night Setback Diff

Unoccupied Heating Setpoint Keypad Menu Path Temperatures\Zone Heating\UnoccHtg Spt=

This read/write configuration property sets the temperature above which the unit starts up and provides unoccupied heating

(night setback). An optional space temperature sensor is required for unoccupied heating.






other data points: Occupied Cooling Setpoint (See page 62), Unoccupied Cooling Setpoint (See page 75), and Occupied




LONWORKS: °C


LONWORKS: -17.7°–37.2°C

NA

ED15060-12 77




Full Reference

MTII RTUC #########.Applications.McQ.RT.Unit State.Unocc Htg Spt AV.Present Value


nciSetpoints_unoccupied_heat DAC, SCC SCPTsetPnts 60 SNVT_ temp_setpt 106

Structure

typedef struct {







} SNVT_temp_setpt;

VAV Box Output Keypad Menu Path System Summary\System\VAV Output=

This read-only property indicates the state of the VAV Box Output (MCB-B012). This output is provided for field use for

interlocking field VAV box operation with the unit heating or cooling. The value is 0 when the unit is in any heating state

and 1 in any other state.






Full Reference

MTII RTUC #########.Applications.McQ.RT.Start Stop Control.VAV Output.Present Value

Enumeration

0 = Heat

1 = Cool

78

78 ED15060-13

Alarms

Two methods of obtaining alarm information are available in the MicroTech II controller. One is to monitor individual

alarms, and the other is to monitor alarms according to alarm class.

Alarms in a MicroTech II controller are divided into three classes: Faults, Problems, and Warnings. Fault alarms have the

highest priority. Problem alarms have the next priority. Warning alarms have the lowest priority. The alarms within each

class are also prioritized. Refer to the appropriate Operation Manual for a description of each alarm. See Reference

Documents on page 3 for document part numbers.

There are multiple mechanisms, with dependencies based on protocol, available in the MicroTech II unit controller for

working with alarms. Using one of these mechanisms, alarms can be recognized and acknowledged by alarm class or

individually, and cleared from the network by alarm class.

Classes Fault Alarms (Highest Priority)

Table 4. Fault Alarms in Order of Priority

Alarm Message Indication Clear

Freeze Freezestat condition while SAF on Manual

Smoke Smoke detected by SAF and/or RAF smoke detector Manual

OAT Sensor OAT sensor failure while selected as the Control Temperature Source Manual

Space Sensor Space temp sensor failure when Control Temperature Source parameter is set to Space Manual

Return Sensor RAT sensor failure Manual

Disch Sensor DAT sensor failure Manual

Duct Hi Limit Excessive discharge compartment pressure sensed by DHL sensor Manual

Hi Return Tmp RAT exceeded the Hi Return Tmp setting Manual

Hi Disch Tmp DAT exceeded the Hi Disch Tmp setting Manual

Lo Disch Tmp DAT fell below the Lo Disch Tmp setting Manual

Fan Fail Airflow not sensed by PC7 after SAF was started Manual

OA Dmpr Stuck OA Dampers < 50% open after Startup (100% OA units only) Manual

Problem Alarms (Medium Priority)

Table 5. Problem Alarms in Order of Priority


Freeze Freezestat tripped while SAF was off Automatic

OAT Sensor OAT sensor failure when Control Temperature Source parameter not set to OAT Automatic

Space Sensor Space temp sensor failure on unit with RAT sensor Automatic

Return Sensor RAT sensor failure Control Temperature Source parameter not set to Return Automatic

Ent Fan Sensor EFT sensor failure Automatic

Lo Airflow Excessive temperature rise sensed across heat section on single stage heat unit Manual

Heat Fail Gas furnace safety lockout condition occurred Automatic

Fan Retry Airflow not sensed by PC7 after SAF was started Automatic

Hi Pres-Ckt1 HP1 or HP3 open indicating ckt # 1 high refrigerant pressure Manual

Hi Pres-Ckt2 HP2 or HP4 open indicating ckt # 2 high refrigerant pressure Manual

Lo Pres-Ckt1 LP1 remained opened after ckt #1 solenoid valve open Automatic

Lo Pres-Ckt2 LP2 remained opened after ckt #2 solenoid valve open Automatic

Frost-Ckt1 d Evaporator coil frost condition occurred on ckt #1 Automatic

Frost-Ckt2 d Evaporator coil frost condition occurred on ckt #2 Automatic

Comp #1 Alm Comp #1 off on low oil pressure (OP1) or motor protector (MP1) Automatic



ED15060-12 79





Ckt1 Clg Ena Clg enable input to CCB1 off when cooling was on Manual

Ckt2 Clg Ena Clg enable input to CCB2 off when cooling was on Manual

GenC Clg Ena Clg enable input to CCB1 off when cooling was on Manual

HtgB Htg Ena Htg enable input to EHB1 off when heating was on Manual

Ckt1 Comm Fail Comm failure occurred between MCB and CCB1 Automatic

Ckt2 Comm Fail Comm failure occurred between MCB and CCB2 Automatic

GenC Comm Fail Comm failure occurred between MCB and CCB1 Automatic

HtgB Comm Fail Comm failure occurred between MCB and EHB1 Automatic

ERecB Comm Fail Comm failure occurred between MCB and ERB1 (100 Series application only) Automatic

Warning Alarms (Lowest Priority)

Table 6. Warning Alarms in Order of Priority


PumpDown-Ckt1 LP1 still closed 180 seconds into ckt #1 pumpdown operation Manual

PumpDown-Ckt2 LP2 still closed 180 seconds into ckt #2 pumpdown operation Manual

Airflow Switch PC7 sensed airflow when unit was off Manual

Dirty Filter Pressure drop across first filter section exceeded the setting of PC5 Manual

Dirty FnlFltr Pressure drop across final filter section exceeded the setting of PC6 Manual

Ckt1 H/W Clg enable input to CCB1 on when cooling off Manual

Ckt2 H/W Clg enable input to CCB2 on when cooling off Manual

GenC H/W Clg enable input to CCB1 on when cooling off Manual

HtgB H/W Htg enable input to EHB1 on when heating off Manual

Alarm Monitoring The Applied Rooftop Unit controller provides individual alarm identification through a unique value for each alarm

beginning with Applied Rooftop application version 1.44 & 2.07. The value assigned to each alarm is the same for both

BACnet and LONMARK applications.

BACnet Alarms within MicroTech II unit controllers can be monitored via BACnet by one of the two following methods; 1)

individually by three BACnet Analog Values, or 2) by alarm class using three BACnet Binary Values.

1. To monitor alarms individually, read the desired instance based on the three BACnet Analog Value objects for Fault

alarms, Problem Alarms, and Warning Alarms. The value of each of these objects described in the tables that follow

will be the largest number in its enumeration that corresponds to an active alarm. Each of these objects will be set to

zero if no alarms are active in that group. These objects are explained in further detail in 1) Alarm, Faults: Individual

Notification, 2 Alarm, Problems: Individual Notification (page 82) or 3) Alarm, Warnings: Individual Notification:

valid alarm values of 4 through 252 (Alarm), 0 (Normal).

2. To monitor alarms by alarm class, read the Present_Value property of any one of three Binary Value objects; 1) Alarm,

Faults: Clear All, 2) Alarm, Problems: Clear All or 3) Alarm, Warnings: Clear All. If the Present_Value property of

these objects reads ACTIVE, an alarm in that class has occurred.

LONMARK Alarms within MicroTech II unit controllers can be monitored individually by using the In Alarm attribute of the Unit Status

Network Variable Output (i.e. nvoUnitStatus_in_alarm). This attribute displays a value that corresponds to the highest

priority alarm that is active. It is possible to have multiple active alarms, but only the highest priority is displayed in this

attribute. For example, if there is a simultaneous Dirty Filter Warning (value of 24) and a Freeze Fault (value of 252), then

the Freeze Fault value of 252 will display in nvoUnitStatus_in_alarm because it is the higher priority alarm of the two.

Once the Freeze Fault condition is corrected and the fault is cleared, the next priority active alarm value (in this example,

80

80 ED15060-13

value of 24 for Dirty Filter alarm) is displayed. The values for all alarms are described in the Alarms section tables. If the

attribute nvoUnitStatus_in_alarm displays a zero, there are no active alarms.

Alarms may also be monitored by alarm class if desired. When the nvoUnitStatus_in_alarm attribute reads a value in the

range of 1 to 99, a Warning Alarm is active. When the attribute reads a value in the range of 100 to 199, a Problem Alarm

is active. When the attribute reads a value in the range of 200 to 255, a Fault Alarm is active.

Alarm Clearing BACnet Alarms within MicroTech II unit controllers can be cleared via BACnet by alarm class using three BACnet Binary Values.

To clear alarms by alarm class, change the Present_Value property of any one of three Binary Value objects; 1) Alarm,

Faults: Clear All, 2) Alarm, Problems: Clear All or 3) Alarm, Warnings: Clear All from ACTIVE to INACTIVE. If the unit

is still in the alarm condition, the Present_Value property of the associated Binary Value object again reads ACTIVE to

indicate the alarm still exists.

LONMARK Alarms within MicroTech II unit controllers can be cleared by alarm class using three Network Variable Inputs (nvi’s) of

type SNVT_Switch; 1) nviAlarmFault, 2) nviAlarmProblem and 3) nviAlarmWarning. To clear alarms in a particular class,

change the state portion of the SNVT from 1 (Alarm) to 0 (Normal). If the unit is still in the alarm condition, the In Alarm

attribute of the Unit Status Network Variable Output (nvoUnitStatus_in_alarm) again reads 1 (Warning Alarm), 100

(Problem Alarm) or 200 (Fault Alarm) to indicate the alarm still exists.

Objects Alarm, Faults: Clear All Keypad Menu Path No Direct Keypad Equivalent

This read/write property indicates whether there is an active fault Alarm. To determine whether at least one fault Alarm is

active read the property. To clear all active fault Alarms, change the property value from Alarm (1) to Normal (0).


Alarms NA BACnet: Real

LONWORKS: Structure

Enumerated NA




Full Reference

MTII RTUC #########.Applications.McQ.RT.Alarm Fault BV.Present Value

Enumeration

0 = Normal

1 = Alarm

LONWORKS LONWORKS Name Profile SNVT Type SNVT Number

nviAlarmFault DAC, SCC SNVT_Switch 95

Structure typedef struct {


signed state; 0=Normal

1=Alarm

} SNVT_switch;

ED15060-12 81

Alarm, Faults: Individual Notification This BACnet Analog Value object allows individual notification of Fault alarms. The value in the table below will be the

largest number in its enumeration that corresponds to an active Fault alarm. This object will be set to zero if no Fault alarms

are active.

In order to clear all Fault alarms at once, see Alarm, Faults: Clear All.


Object Type Type ID Instance-100 Series Application Code

Instance-200 Series Application Code

Name ID

Analog Value 2 4862 4870 Present Value 85

Full Reference

MTII RTUC #########.Applications.McQ.RT.Alarm Faults.Faults MAV

Enumeration

0 – No Active Faults

204 – Outdoor Air Damper Stuck

208 – Fan Fail

212 – Low Discharge Air Temp

216 – High Discharge Air Temp

220 – High Return Air Temp

224 – Duct High Limit

228 – Discharge Sensor Fail

232 – Return Sensor Fail

236 – Space Sensor Fail

240 – Outdoor Air Sensor Fail

248 – Smoke Fault

252 – Freeze Fault

Alarm, Problems: Clear All Keypad Menu Path No Direct Keypad Equivalent

This read/write property indicates whether there is an active Problem Alarm. To determine whether at least one Problem

Alarm is active read the property. To clear active all Problem Alarms, change the property value from Alarm (1) to Normal

(0).



LONWORKS: Structure

Enumerated NA




Full Reference

MTII RTUC #########.Applications.McQ.RT.Alarm Problem BV.Present Value

Enumeration

0 = Normal

1 = Alarm


nviAlarmProblem DAC, SCC SNVT_Switch 95

Structure

typedef struct {



1=Alarm

} SNVT_switch;

82

82 ED15060-13

Alarm, Problems: Individual Notification

This BACnet Analog Value object allows individual notification of Problem alarms. The value in the table below will be

the largest number in its enumeration that corresponds to an active Problem alarm. This object will be set to zero if no

Problem alarms are active.

In order to clear all Problem alarms at once, see Alarm, Problems: Clear All.




Name ID


Full Reference

MTII RTUC #########.Applications.McQ.RT.Alarm Problems.Problems MAV

Enumeration

0 – No Active Problems

104 – Energy Recovery Board Comm Fail (100 Series application code only)

105 – Heating Board Comm Fail

106 – Generic Condenser Board Comm Fail

109 – Compressor Board # 2 Comm Fail

110 – Compressor Board # 1 Comm Fail

113 – Heating Board Enable Fail

114 – Generic Condenser Board Enable Fail

117 – Compressor Board # 2 Enable Fail

118 – Compressor Board # 1 Enable Fail

129 – Compressor # 6 Fail (App 2.07 only)

130 – Compressor # 5 Fail (App 2.07 only)

131 – Compressor # 4 Fail




153 - Frost Protect - Circuit # 2

154 - Frost Protect - Circuit # 1

158 - Low Pressure - Circuit # 2

159 - Low Pressure - Circuit # 1

166 – High Pressure – Circuit # 2

167 – High Pressure – Circuit # 1

170 – Fan Retry

173 - Heat Fail

176 - Low Airflow

179– Entering Fan Sensor Problem

182 – Return Air Sensor Problem

185 – Space Sensor Problem

188 – OAT Sensor Problem

197 – Freeze Problem

ED15060-12 83

Alarm, Warnings: Clear All Keypad Menu Path No Direct Keypad Equivalent

This read/write property indicates whether there is an active Warning Alarm. To determine whether at least one Warning

Alarm is active read the property. To clear all active Warning Alarms, change the property value from Alarm (1) to Normal

(0).



LONWORKS: Structure

Enumerated NA




Full Reference

MTII RTUC #########.Applications.McQ.RT.Alarm Warning BV.Present Value

Enumeration

0 = Normal

1 = Alarm


nviAlarmWarning DAC, SCC SNVT_Switch 95

Structure

typedef struct {



1=Alarm

} SNVT_switch;

Alarm, Warnings: Individual Notification This BACnet Analog Value object allows individual notification of Warning alarms. The value in the table below will be

the largest number in its enumeration that corresponds to an active Warning alarm. This object will be set to zero if no

Warning alarms are active.

In order to clear all Warning alarms at once, see Alarm, Warnings: Clear All.




Name ID


Full Reference

MTII RTUC #########.Applications.McQ.RT.Alarm Warnings.Warnings MAV

Enumeration

0 – No Active Warnings

4 – Heating Board Hardware Warning

8 – Generic Cond Board Hardware Warning

12 – Compressor Board 2 Hardware Warning

16 – Compressor Board 1 Hardware Warning

20 – Dirty Final Filter Warning

24 - Dirty Filter Warning

28 – Airflow Switch Warning

36 – Incomplete Pumpdown - Circuit # 2

40 - Incomplete Pumpdown - Circuit # 1

84

84 ED15060-13

Appendix A: Protocol Implementation Conformance Statement (PICS)

This section contains the Protocol Implementation Conformance Statement (PICS) for the MicroTech II Rooftop Unit

Controller as required by ANSI/ASHRAE (American National Standards Institute/American Society of Heating,

Refrigeration, and Air Conditioning Engineers) Standard 135-2001, BACnet; A Data Communication Protocol for Building

Automation and Control Networks.

BACnet Protocol Implementation Conformance Statement Date: September 2008

Vendor Name:

Product Name:

Product Model Number:

Daikin Rooftop Unit

Controller MTII RUC

Applications Software Version: Rooftop Unit 2506010153

Rooftop Unit, Six-Compressor 2506010209 (old)

Firmware Revision: 5.3

BACnet Protocol Revision: Version 1

Revision 2

Product Description The MicroTech II Rooftop Unit Controller with optional BACnet Communication Module is a microprocessor-based

controller designed to operate applied rooftop units and be integrated into BACnet building automation systems.

The controller provides normal temperature, static pressure and ventilation control and alarm monitoring with alarm-

specific component shutdown in critical system conditions. Access to temperatures, pressures, operating states, alarm

messages, control parameters and schedules is available through an equipment-mounted keypad/display and the BACnet

control network.

BACnet Standardized Device Profile Based on BIBBs supported, the MicroTech II Rooftop Unit Controller with optional BACnet Communications Module is

nearly a BACnet Advanced Application Controller (B-AAC). Refer to the section below entitled BACnet Interoperability

Building Blocks (BIBBs) Supported for a complete listing of BIBBS.

ED15060-12 85

BACnet Interoperability Building Blocks (BIBBs) Supported

BIBB Name Designation

Data Sharing – ReadProperty – A DS-RP-A

Data Sharing – ReadProperty – B DS-RP-B

Data Sharing – ReadPropertyMultiple – A DS-RPM-A

Data Sharing – ReadPropertyMultiple – B DS-RPM-B

Data Sharing – Write Property – A DS-WP-A

Data Sharing – WriteProperty – B DS-WP-B

Data Sharing – WritePropertyMultiple – A DS-WPM-A

Data Sharing – WritePropertyMultiple – B DS-WPM-B

Data Sharing – COV – Unsolicited – A DS-COVU-A

Data Sharing – COV – Unsolicited – B DS-COVU-B

Device Management – Dynamic Device Binding – A DM-DDB-A

Device Management – Dynamic Device Binding – B DM-DDB-B

Device Management – Dynamic Object Binding – A DM-DOB-A

Device Management – Dynamic Object Binding – B DM-DOB-B

Device Management – Private Transfer – A DM-PT-A

Device Management – Private Transfer – B DM-PT-B

Device Management – UTCTimeSynchronization – B DM-UTC-B

Device Management – ReinitializeDevice – B DM-RD-B

Device Management – List Manipulation – B DM-LM-B

Device Management – Object Creation and Deletion – B DM-OCD-B

86

86 ED15060-13

Standard Object Types Supported

Object-Type

Cre

ata

ble

Dele

teab

le

Optional Properties Supported Writable Properties Not Required To Be Writable

Analog Input Description

Reliability

COV_Increment

Object_Name

Present_Value

Description

Out_Of_Service

Units

COV_Increment

Analog Output Description

Reliability

COV_Increment

Object_Name

Present_Value

Description

Units

Relinquish_Default

COV_Increment

Analog Value Description

Reliability

Relinquish_Default

COV_Increment

Object_Name

Present_Value

Description

Reliability

Units

Relinquish_Default

COV_Increment

Binary Input Description

Reliability

Object_Name

Present_Value

Description

Out_Of_Service

Binary Output Description

Reliability

Object_Name

Present_Value

Description

Relinquish_Default

Binary Value Description

Reliability

Relinquish_Default

Object_Name

Present_Value

Description

Reliability

Relinquish_Default

Calendar Description Object_Name

Description

Date_List

Device Description

Local_Time

Local_Date

UTC_Offset

ADPU_Segment_Timeout

Object_Name

Application_Software_Version

Description

Max_ADPU_Length_Accepted

Local_Time

Local_Date

UTC_Offset

Daylight_Saving_Status

ADPU_Segment_Timeout

APDU_Timeout

Number_Of_APDU_Retries

ED15060-12 87

Object-Type

Cre

ata

ble

Dele

teab

le

Optional Properties Supported Writable Properties Not Required To Be Writable

Schedule Description

Weekly_Schedule

Exception_Schedule

Object_Name

Description

Effective_Period

Weekly_Schedule

Exception_Schedule

List_Of_Object_Property_Refs

Data Link Layer Options BACnet IP, (Annex J)

MS/TP master (Clause 9), baud rate(s): 9600, 19200, 38400 bps

Segmentation Capability Segmented requests supported Window Size: 127

Segmented responses supported Window Size: 127

Device Address Binding Static Device Binding

Yes

No

Character Sets Supported ANSI X3.4 IBM /Microsoft DBCS ISO 8859-1

ISO 10646 (UCS-2) ISO 10646 (UCS-4) JIS C 6226

Note: Support for multiple character sets does not imply they can be supported simultaneously.

88

88 ED15060-13

Appendix B: Early Versions of the BACnet Device Object

Early versions of the MicroTech II Applied Rooftop Unit Controller used different values for some device object properties.

The major differences other than variable properties are highlighted in Table 7 and Table 8.

Table 7. Earlier Version A of the MicroTech II Applied Rooftop Device Object Properties

Property Property Identifier Value Data Type

Object Identifier 75 (8):1000 BACnet Object Identifier

Object Name 77 mdcu_ ######### Character String

Object Type 79 BACDevice BACnet Object Type


Vendor Identifier 120 3 Unsigned16

Model Name 70 mdcu_ Character String



Description 28 Character String



Table 8. Earlier Version B of the MicroTech II Applied Rooftop Device Object Properties

Property Property Identifier Value Data Type

Object Identifier 75 (8):10 BACnet Object Identifier

Object Name 77 MicroTech II ######### Character String

Object Type 79 BACDevice BACnet Object Type


Vendor Identifier 120 3 Unsigned16

Model Name 70 MT II RCU Character String



Description 28 Character String



ED15060-12 89

Index

AHU ID, 3, 25

Airflow Status, 18, 25 Alarm, Faults

Clear All, 20, 80

Alarm, Problems Clear All, 20, 24, 81

Alarm, Warning

Clear Individual, 83 Alarm, Warnings

Clear All, 20, 24, 83 Application Mode, 14, 16, 18, 22, 25

ASHRAE, 5, 7, 33, 34, 35, 72, 84

BACnet Standard Objects, 16, 18 BACnet/IP, 5, 9, 10

BIBBs, 84, 85

Building Static Pressure, 14, 19, 22, 27 Building Static Pressure Dead Band, 27

Building Static Pressure Setpoint, 19, 22, 27

Bypass Hours, 28 Chilled Water Capacity, 28

Clearing, 80

Compressor 1 Operating Hours, 28 Compressor 2 Operating Hours, 28

Compressor 3 Operating Hours, 29

Compressor 4 Operating Hours, 29, 30 Control Temperature, 18, 30

Control Temperature Source, 19, 30

Cooling Capacity, 18, 22, 31 Cooling Control Status, 18, 31

Cooling Operating Hours, 32

Cooling Reset Enable State, 32, 43 Cooling Reset Enable Value, 33

Daily Schedule, 20, 33, 34

Date, 9, 35, 86, 88 Dehumidification

Maximum Cooling Stages, 35

Minimum Cooling Stages, 35

Dehumidification Control, 35

Dehumidification Operating Hours, 36

Dehumidification Status, 20, 23, 36 Device Object, 8, 9, 88

Dew Point Dead Band, 37

Dew Point Setpoint, 20, 37 Dew Point Temperature, 20, 23, 37

Discharge Air Controller profile, 5, 14

Discharge Air Cooling Dead Band, 38 Discharge Air Cooling Setpoint, 19, 23, 38

Discharge Air Heating Dead Band, 39, 45

Discharge Air Heating Setpoint, 20, 23, 39 Discharge Air Temperature, 16, 18, 20, 22, 39

Discharge Fan Capacity, 19, 20, 22, 24, 40, 68

Discharge Fan Status, 7, 18, 22, 40 doubly-terminated network, 13

Duct Static Pressure, 18, 22, 41, 67

Duct Static Pressure Dead Band, 41 Duct Static Pressure Setpoint, 16, 18, 22, 41

Economizer Changeover Differential, 42

Economizer Changeover Method, 42 Economizer Changeover Temperature Setpoint, 43

Economizer Operating Hours, 43

Effective Cooling Discharge Setpoint, 19, 23, 44, 62 Effective Cooling Enable Setpoint, 19, 22, 44, 46, 47

Effective Discharge Air Temperature Setpoint, 44, 45 Effective Heating Discharge Setpoint, 20, 23, 45, 63

Effective Heating Enable Setpoint, 19, 23, 46, 47

Effective Minimum Outdoor Damper Position Setpoint, 46, 58, 64 Effective Setpoint Output, 46, 47, 71, 72

Emergency Override Mode Flag, 16, 18, 22, 47

Energy Recovery, 20, 48, 49 Energy Recovery Exhaust Temperature, 20, 48

Energy Recovery Hours, 48

Energy Recovery Supply Temperature, 20, 49

Entering Fan Temperature, 18, 49 Ethernet, 10

Example of BACnet Data Point, 7

Face and Bypass Changeover Temperature Setpoint, 50 Face and Bypass Control, 49

Fan Operating Hours, 50

Fan Operation Output, 18, 50 Fault Alarms, 78

free topology, 11, 13 Full Reference, 7

Heating Capacity, 18, 22, 50

Heating Control Status, 18, 51 Heating Operating Hours, 51

Heating Reset Enable State, 52

Heating Reset Enable Value, 52 Holidays, 20, 53

HVAC Unit Type Identifier, 24, 54

In Alarm, 17, 24, 54, 80 Instance, 7

interoperable, 5, 11

IP address, 9 IP Subnet Mask, 9, 10

Local Bypass Time, 24, 55, 60

LonWorks Variables, 11, 16, 22 MAC address, 9

Maximum Discharge Air Cooling Setpoint, 55

Maximum Discharge Air Heating Setpoint, 55 Maximum Purge Time, 56

Minimum Discharge Air Cooling Setpoint, 56

Minimum Discharge Air Heating Setpoint, 56 Minimum Discharge Air Temperature Control Flag, 57

Minimum Discharge Air Temperature Limit, 57

Minimum Outdoor Airflow/Damper Position, 57 Minimum Send Time, 24, 58

MSTP, 5, 9, 10, 14

Neuron, 13, 14

Notice, 4

Notification, 17

OA Ambient, 23, 42, 58 Object Identifier, 7

Object Type, 7

Occupancy, 14, 16, 18, 22, 59, 60, 61, 62 Occupancy Mode, 16, 18, 22, 59, 61

Occupancy Scheduler Input, 16, 18, 22, 61

Occupancy Source, 18, 62 Occupied Cooling Dead Band, 62

Occupied Cooling Setpoint, 16, 19, 22, 62, 71

Occupied Heating Dead Band, 63 Occupied Heating Setpoint, 16, 19, 23, 63, 71

Outdoor Air Damper Minimum Position, 64

Outdoor Air Damper Position, 19, 23, 64 Outdoor Air Flow, 19, 23, 58, 65

Outdoor Air Temperature, 14, 16, 18, 22, 65

Problem Alarms, 78, 81 Protocol Implementation Conformance Statement, 5, 6, 84

Receive Heartbeat, 24, 66

Relative Humidity, 14, 20, 23, 66, 67 Relative Humidity Control Type, 20, 66

Relative Humidity Dead Band, 67

Relative Humidity Setpoint, 20, 23, 67 Remote Discharge Fan Capacity Control Flag, 67

Remote Discharge Fan Capacity Setpoint, 14, 67, 68 Remote Return Fan Capacity Control Flag, 68, 69

Remote Return Fan Capacity Setpoint, 69

Return Air Temperature, 14, 18, 22, 69 Return Fan Capacity, 19, 20, 22, 69

Return Fan Status, 18, 22, 70

Send Heartbeat, 24, 60, 70, 76 service pin, 14

Space Comfort Controller, 5, 11, 14

90 ED15060-13

Space Setpoint Type, 20, 71, 72 Space Temperature, 14, 18, 22, 71, 75

Standard Configuration Parameter Type, 11

Standard Network Variable Types, 11

Temperature Setpoint Input, 24, 46, 47, 72

Time, 9, 33, 50, 72, 86, 88

Type Enumeration, 7 UDP, 9

Unit Status, 16, 17, 18, 22, 72, 80 Unoccupied Cooling Differential, 75

Unoccupied Cooling Setpoint, 16, 19, 22, 75

Unoccupied Heating Differential, 76

Unoccupied Heating Setpoint, 16, 19, 23, 76

VAV Box Output, 18, 77

Warning Alarms, 79, 83 XIF, 14

This document contains the most current product information as of this printing. For the most current product information, please go to www.DaikinApplied.com.

Daikin Applied Solutions800.432.1342www.DaikinApplied.com